🕷️ Crawler Inspector

URL Lookup

Direct Parameter Lookup

Raw Queries and Responses

1. Shard Calculation

Query:

Response:

Calculated Shard: 156 (from laksa010)

2. Crawled Status Check

Query:

curl -X POST \
  'http://laksa156.int.ahrefs:8124/' \
  -H 'Content-Type: text/plain' \
  -H 'X-ClickHouse-Database: crawler3' \
  -H 'Authorization: Basic YXBpOg==' \
  -d 'SELECT getAhrefsURLFromUnparsed(src_unparsed) AS found_url, ifNull(toUnixTimestamp(download_stamp), 0) AS crawl_time, ifNull(toUnixTimestamp(props_url_first_seen), 0) AS first_indexed_time, download_http_code AS http_code, src_unparsed AS src_unparsed, src_root_hash AS src_root_hash, history_drop_reason AS history_drop_reason, meta_title AS meta_title, meta_descriptions AS meta_descriptions, attrs_boilerpipe_text AS attrs_boilerpipe_text, attrs_markdown AS attrs_markdown, attrs_readable_markdown AS attrs_readable_markdown, meta_canonical AS meta_canonical FROM crawler3.page_info_local FINAL PREWHERE (src_root_hash, src_unparsed) IN ((getAhrefsRootHashFromUnparsed(getAhrefsUnparsedNoserviceFromURL(\'https://www.mdanderson.org/cancerwise/how-much-caffeine-is-too-much.h00-159776445.html\')), getAhrefsUnparsedNoserviceFromURL(\'https://www.mdanderson.org/cancerwise/how-much-caffeine-is-too-much.h00-159776445.html\'))) FORMAT JSONEachRow'

Response:

{"found_url":"https:\/\/www.mdanderson.org\/cancerwise\/how-much-caffeine-is-too-much.h00-159776445.html","crawl_time":1776027796,"first_indexed_time":1746865947,"http_code":200,"src_unparsed":"org,mdanderson!www,\/cancerwise\/how-much-caffeine-is-too-much.h00-159776445.html s443","src_root_hash":"10915658028102066556","history_drop_reason":null,"meta_title":"How much caffeine is too much? | UT MD Anderson","meta_descriptions":["How much caffeine is it OK to drink a day? And what happens if you drink too much? Clinical dietitian Kaylie Brown answers these questions and more."],"attrs_boilerpipe_text":"Caffeine does more than just provide a boost of energy. For many, it’s a daily ritual.\nA morning cup of coffee can make leaving a warm bed slightly more bearable. A shot of espresso can perk you up during that afternoon slump. Maybe you even rely on the occasional energy drink to fuel a late-night study session.\nBut you might wonder how it impacts your health. How much is too much? And is there anything we can do to make our caffeinated drinks healthier?\nClinical dietitian Kaylie Brown helps answer these questions and more.\nHow does caffeine work?\nYou likely already know how the right amount of caffeine makes you\nfeel\n: fueled and ready to take on the day. But how else does caffeine affect the body?\nThe National Institutes of Health’s\nNational Library of Medicine\nwrites that caffeine can:\nStimulate the central nervous system\nAct as a diuretic, increasing urination\nCause your body to release more stomach acid\nPossibly impact calcium absorption\nRaise blood pressure\nHow much caffeine is too much?\nMost adults can consume about 400 milligrams of caffeine per day without negative effects, the\nFood and Drug Administration\n(FDA) writes.\n“A typical dose of caffeine is around 70 to 100 milligrams per drink,” Brown says.\nBut many caffeinated beverages, like the pot of coffee in your office or a to-go latte, don’t come with ingredient labels that say exactly how much caffeine they contain.\nResources like the\nNational Library of Medicine\nprovide general caffeine ranges for popular beverages. This can help you get a better idea of how much caffeine you are consuming.\nCoffee (8 ounces): 95-200 milligrams\nEnergy drink (8 ounces): 70-100 milligrams\nCola (12 ounces): 35-45 milligrams\nTea (8 ounces): 14-60 milligrams\nWhat factors impact caffeine tolerance?\nWhile general caffeine recommendations can give you a sense of how much caffeine is safe to consume, caffeine intake varies from person to person. That means your caffeine intake might look different from that of a friend who can drink coffee late into the afternoon and still manage to fall asleep without issue.\nBrown says caffeine tolerance can vary based on factors such as:\nHow much caffeine you drink\nHow quickly you drink it\nHow long it takes your body to eliminate the caffeine\nBody composition\nCaffeine sensitivity\nMedications\nHealth conditions\nWhat happens when you have too much caffeine?\nYour body can provide you with some helpful signs that you’ve over-caffeinated. Brown notes that symptoms of drinking too much caffeine include:\nIncreased heart rate\nHeart palpitations\nHigh blood pressure\nInsomnia\nSleep disturbances\nAnxiety\nJitters\nGastrointestinal upset\nNausea\nHeadaches\nSeizures\nIs decaf better than a caffeinated drink?\nMuch like your unique coffee order, this answer might look different from one person to the next.\n“I think that making these decisions depends on intake, overall health goals, and tolerance and side effects,” Brown says.\nA registered dietitian or doctor can help you decide if drinking caffeine is a good choice for you.\nReady to dabble in the world of decaf? Keep in mind that cutting out caffeine abruptly can have side effects like headaches, fatigue and drowsiness, Brown says.\n“If you choose to cut back on your caffeine intake, I recommend doing so gradually,” she says.\nAnother tip? If you’re trying to use medication to relieve a headache caused by a lack of caffeine, Brown says to check that it doesn’t contain more caffeine.\nShould anyone avoid caffeine altogether?\nIt depends. Caffeine isn’t recommended for people who have certain medical conditions or who are taking some medications, Brown says.\nFor example, she recommends that people with the following medical conditions watch their caffeine intake:\nGastroesophageal reflux disease (GERD)\nHeart disease\nHepatic impairment\nHypersensitivity\nIron deficiency anemia\nPeptic ulcer disease\nPregnancy\nKidney and\/or urinary impairments\nSeizures\nSevere anxiety\nIrregular heartbeats\nStill unsure whether it's safe for you to consume caffeine? It’s best to consult with your care team.\nIs caffeine safe for cancer patients?\nThe answer to this question will look different for each person.\nHere are a few factors Brown says play into whether it’s safe for someone in\ncancer treatment\nto consume caffeine.\nMedication\nMedical and surgical history\nSide effects\n, such as\ndehydration\nand\ndiarrhea \n“It is best to work with your medical team to determine what’s best for you,” she says.\nHow can we make caffeinated beverages healthier?\nCaffeine can affect your health, but so can other beverage choices.\n“The largest concerns with coffee intake and health are less directly related to moderate amounts of caffeine consumption, but rather the habits around those beverages,” Brown says. \nFor example, while the amount of caffeine in some specialty coffee or energy drinks may be well within the FDA’s safe daily caffeine recommendations, some can single-handedly account for more added sugar than it is\nrecommended to consume in a day\n. Likewise, dairy products like milk, cold foam and creamer can be high in trans-fat and saturated fat.\nIf you’re looking for healthier ways to change up the taste of your coffee, here are Brown's suggestions.\nFlavor it with cinnamon or nutmeg.\nUse natural sugars like maple syrup or pasteurized honey rather than artificial sweeteners. These options are still added sugar, but it doesn’t take much to sweeten your drink — try starting with a teaspoon or two. This can ultimately help you consume less sugar overall. \nNot a fan of strong coffee? Rather than add sweetener, try adding skim or low-fat milk or water.\n“It is OK to add small amounts of items like sugar, creamer or flavorings to your coffee,” Brown says. “However, be mindful to check the ingredient list and monitor overall intake of excess calories and added sugar as this could contribute to excess weight gain.”\nRequest an appointment at\nMD Anderson\nonline\nor call\n1-877-632-6789\n.","attrs_markdown":"[Skip to Content](https:\/\/www.mdanderson.org\/cancerwise\/how-much-caffeine-is-too-much.h00-159776445.html#skip)\n\n- [MyChart](https:\/\/my.mdanderson.org\/MyChart\/Home\/ \" Opens a new window\")\n  Log in to our secure, personalized website to manage your care (formerly myMDAnderson).\n- Request an Appointment\n  Request an Appointment\n  \n  If you are ready to make an appointment, select a button on the right. If you have questions about UT MD Anderson’s appointment process, our information page may be the best place to start.\n  \n  [Appointment Information](https:\/\/www.mdanderson.org\/about-md-anderson\/contact-us\/askmdanderson\/appointments.html)\n  \n  [New Patients](https:\/\/my.mdanderson.org\/RequestAppointment \" Opens a new window\")  [Current Patients](https:\/\/www.mdanderson.org\/patients-family\/becoming-our-patient\/planning-for-care\/returning-patients.html)  [Referring Physicians](https:\/\/my.mdanderson.org\/physicianreferral)\n- [Donate Today](https:\/\/gifts.mdanderson.org\/Default.aspx?tsid=37435 \" Opens a new window\")\n\n[![The University of Texas MD Anderson Cancer Center](https:\/\/www.mdanderson.org\/etc.clientlibs\/mda\/clientlibs\/mda-web\/clientlib-site\/resources\/images\/xmda-logo.png.pagespeed.ic.N11qaULSMU.png)](https:\/\/www.mdanderson.org\/)\n\nSearch\n\nClose\n\nMenu\n\nClose\n\n- [Clinical Trials](https:\/\/www.mdanderson.org\/patients-family\/diagnosis-treatment\/clinical-trials.html)\n- [Locations](https:\/\/www.mdanderson.org\/about-md-anderson\/our-locations.html)\n- [Careers](https:\/\/jobs.mdanderson.org\/)\n- [Contact Us](https:\/\/www.mdanderson.org\/about-md-anderson\/contact-us.html)\n- [Our Doctors](https:\/\/faculty.mdanderson.org\/)\n- Languages\n  - [Español](https:\/\/www.mdanderson.org\/es\/why-choose-md-anderson.html \" Opens a new window\")\n  - [عربى](https:\/\/www.mdanderson.org\/ar\/why-choose-md-anderson.html \" Opens a new window\")\n  - [中文](https:\/\/www.mdanderson.org\/zh\/why-choose-md-anderson.html \" Opens a new window\")\n  - [Türkçe](https:\/\/www.mdanderson.org\/tr\/why-choose-md-anderson.html \" Opens a new window\")\n\n[close](https:\/\/www.mdanderson.org\/cancerwise\/how-much-caffeine-is-too-much.h00-159776445.html)\n\n[MyChart](https:\/\/my.mdanderson.org\/MyChart\/Home\/ \" Opens a new window\")\n\n[Donate Today](https:\/\/gifts.mdanderson.org\/Default.aspx?tsid=37435 \" Opens a new window\")\n\n- [Clinical Trials](https:\/\/www.mdanderson.org\/patients-family\/diagnosis-treatment\/clinical-trials.html)\n- [Locations](https:\/\/www.mdanderson.org\/about-md-anderson\/our-locations.html)\n- [Careers](https:\/\/jobs.mdanderson.org\/)\n- [Contact Us](https:\/\/www.mdanderson.org\/about-md-anderson\/contact-us.html)\n- Languages\n  - [Español](https:\/\/www.mdanderson.org\/es\/why-choose-md-anderson.html \" Opens a new window\")\n  - [عربى](https:\/\/www.mdanderson.org\/ar\/why-choose-md-anderson.html \" Opens a new window\")\n  - [中文](https:\/\/www.mdanderson.org\/zh\/why-choose-md-anderson.html \" Opens a new window\")\n  - [Türkçe](https:\/\/www.mdanderson.org\/tr\/why-choose-md-anderson.html \" Opens a new window\")\n\nRequest an Appointment\n\n- [Request an Appointment](https:\/\/www.mdanderson.org\/about-md-anderson\/contact-us\/askmdanderson\/appointments.html)\n- [New Patients](https:\/\/my.mdanderson.org\/RequestAppointment \" Opens a new window\")\n- [Current Patients](https:\/\/www.mdanderson.org\/patients-family\/becoming-our-patient\/planning-for-care\/returning-patients.html)\n- [Referring Physicians](https:\/\/my.mdanderson.org\/physicianreferral)\n\n- [Patients & Family](https:\/\/www.mdanderson.org\/patients-family.html)\n  - Becoming Our Patient\n    \n    - Becoming Our Patient\n    - [Becoming Our Patient Home](https:\/\/www.mdanderson.org\/patients-family\/becoming-our-patient.html)\n    - [Why UT MD Anderson](https:\/\/www.mdanderson.org\/patients-family\/becoming-our-patient\/why-md-anderson.html)\n    - [Planning for Care](https:\/\/www.mdanderson.org\/patients-family\/becoming-our-patient\/planning-for-care.html)\n    - [Getting to UT MD Anderson](https:\/\/www.mdanderson.org\/patients-family\/becoming-our-patient\/getting-to-md-anderson.html)\n    - [While You're Here](https:\/\/www.mdanderson.org\/patients-family\/becoming-our-patient\/while-youre-here.html)\n    - [International Center](https:\/\/www.mdanderson.org\/patients-family\/becoming-our-patient\/international-center.html)\n    - [Services and Amenities](https:\/\/www.mdanderson.org\/patients-family\/becoming-our-patient\/services-amenities.html)\n    - [Insurance & Billing](https:\/\/www.mdanderson.org\/patients-family\/becoming-our-patient\/insurance-billing.html)\n    - [Second Opinion Appointments](https:\/\/www.mdanderson.org\/patients-family\/becoming-our-patient\/second-opinion-appointments.html)\n  - Diagnosis & Treatment\n    \n    - Diagnosis & Treatment\n    - [Diagnosis & Treatment Home](https:\/\/www.mdanderson.org\/patients-family\/diagnosis-treatment.html)\n    - [Cancer Types](https:\/\/www.mdanderson.org\/patients-family\/diagnosis-treatment\/cancer-types.html)\n    - [A New Diagnosis](https:\/\/www.mdanderson.org\/patients-family\/diagnosis-treatment\/a-new-diagnosis.html)\n    - [Treatment Options](https:\/\/www.mdanderson.org\/patients-family\/diagnosis-treatment\/treatment-options.html)\n    - [Care Centers & Clinics](https:\/\/www.mdanderson.org\/patients-family\/diagnosis-treatment\/care-centers-clinics.html)\n    - [Emotional & Physical Effects](https:\/\/www.mdanderson.org\/patients-family\/diagnosis-treatment\/emotional-physical-effects.html)\n    - [Patient Support](https:\/\/www.mdanderson.org\/patients-family\/diagnosis-treatment\/patient-support.html)\n    - [Clinical Trials](https:\/\/www.mdanderson.org\/patients-family\/diagnosis-treatment\/clinical-trials.html)\n  - Supporting a Loved One\n    \n    - Supporting a Loved One\n    - [Supporting a Loved One Home](https:\/\/www.mdanderson.org\/patients-family\/supporting-a-loved-one.html)\n    - [Caregiver Roles & Challenges](https:\/\/www.mdanderson.org\/patients-family\/supporting-a-loved-one\/caregiver-roles-challenges.html)\n    - [Children and Teens](https:\/\/www.mdanderson.org\/patients-family\/supporting-a-loved-one\/supporting-children-teens.html)\n    - [Taking Care of Yourself](https:\/\/www.mdanderson.org\/patients-family\/supporting-a-loved-one\/taking-care-of-yourself.html)\n    - [Helping a UT MD Anderson Patient](https:\/\/www.mdanderson.org\/patients-family\/supporting-a-loved-one\/Helping-mdanderson-patient.html)\n    - [Dealing with Loss](https:\/\/www.mdanderson.org\/patients-family\/supporting-a-loved-one\/dealing-with-loss.html)\n  - Life After Cancer\n    \n    - Life After Cancer\n    - [Life After Cancer Home](https:\/\/www.mdanderson.org\/patients-family\/life-after-cancer.html)\n    - [Follow-up Care After Cancer Treatment](https:\/\/www.mdanderson.org\/patients-family\/life-after-cancer\/followup-care-after-cancer-treatment.html)\n    - [Long-Term Effects of Cancer](https:\/\/www.mdanderson.org\/patients-family\/life-after-cancer\/long-term-effects.html)\n    - [Social & Emotional Impacts of Cancer](https:\/\/www.mdanderson.org\/patients-family\/life-after-cancer\/social-emotional-impacts.html)\n    - [Legal & Financial Impacts of Cancer](https:\/\/www.mdanderson.org\/patients-family\/life-after-cancer\/legal-financial-impacts.html)\n    - [Survivorship Week](https:\/\/www.mdanderson.org\/patients-family\/life-after-cancer\/survivorship-week.html)\n  - [Request an Appointment](https:\/\/www.mdanderson.org\/about-md-anderson\/contact-us\/askmdanderson\/appointments.html)\n    [Current Patients Find information and resources for current and returning patients.](https:\/\/www.mdanderson.org\/patients-family\/becoming-our-patient\/planning-for-care\/returning-patients.html)\n    [Clinical Trials Learn about clinical trials at UT MD Anderson and search our database for open studies.](https:\/\/www.mdanderson.org\/patients-family\/diagnosis-treatment\/clinical-trials.html)\n- [Prevention & Screening](https:\/\/www.mdanderson.org\/prevention-screening.html)\n  - Manage Your Risk\n    \n    - Manage Your Risk\n    - [Manage Your Risk Home](https:\/\/www.mdanderson.org\/prevention-screening\/manage-your-risk.html)\n    - [Tobacco Control](https:\/\/www.mdanderson.org\/prevention-screening\/manage-your-risk\/tobacco-control-at-md-anderson.html)\n    - [Diet](https:\/\/www.mdanderson.org\/prevention-screening\/manage-your-risk\/diet.html)\n    - [Body Weight](https:\/\/www.mdanderson.org\/prevention-screening\/manage-your-risk\/body-weight.html)\n    - [Physical Activity](https:\/\/www.mdanderson.org\/prevention-screening\/manage-your-risk\/physical-activity.html)\n    - [Skin Safety](https:\/\/www.mdanderson.org\/prevention-screening\/manage-your-risk\/skin-safety.html)\n    - [HPV](https:\/\/www.mdanderson.org\/prevention-screening\/manage-your-risk\/hpv.html)\n    - [Hepatitis](https:\/\/www.mdanderson.org\/prevention-screening\/manage-your-risk\/hepatitis.html)\n    - [Alcohol](https:\/\/www.mdanderson.org\/prevention-screening\/manage-your-risk\/alcohol.html)\n  - Family History\n    \n    - Family History\n    - [Family History Home](https:\/\/www.mdanderson.org\/prevention-screening\/family-history.html)\n    - [Genetic Testing](https:\/\/www.mdanderson.org\/prevention-screening\/family-history\/genetic-testing.html)\n    - [Hereditary Cancer Syndromes](https:\/\/www.mdanderson.org\/prevention-screening\/family-history\/hereditary-cancer-syndromes.html)\n    - [Genetic Counseling and Testing FAQs](https:\/\/www.mdanderson.org\/prevention-screening\/family-history\/faqs.html)\n  - Cancer Screenings\n    \n    - Cancer Screenings\n    - [Cancer Screenings Home](https:\/\/www.mdanderson.org\/prevention-screening\/get-screened.html)\n    - [Mammograms & Breast Cancer Screening](https:\/\/www.mdanderson.org\/prevention-screening\/get-screened\/breast-cancer-screening.html)\n    - [Cervical Cancer Screening](https:\/\/www.mdanderson.org\/prevention-screening\/get-screened\/cervical-cancer-screening.html)\n    - [Colorectal Cancer Screening](https:\/\/www.mdanderson.org\/prevention-screening\/get-screened\/colorectal-cancer-screening.html)\n    - [Endometrial Cancer Screening](https:\/\/www.mdanderson.org\/prevention-screening\/get-screened\/endometrial-cancer-screening.html)\n    - [Liver Cancer Screening](https:\/\/www.mdanderson.org\/prevention-screening\/get-screened\/liver-cancer-screening.html)\n    - [Lung Cancer Screening](https:\/\/www.mdanderson.org\/prevention-screening\/get-screened\/lung-cancer-screening.html)\n    - [Mobile Mammography](https:\/\/www.mdanderson.org\/prevention-screening\/get-screened\/mobile-mammography.html)\n    - [Ovarian Cancer Screening](https:\/\/www.mdanderson.org\/prevention-screening\/get-screened\/ovarian-cancer-screening.html)\n    - [Prostate Cancer Screening](https:\/\/www.mdanderson.org\/prevention-screening\/get-screened\/prostate-cancer-screening.html)\n    - [Skin Cancer Screening](https:\/\/www.mdanderson.org\/prevention-screening\/get-screened\/skin-cancer-screening.html)\n    - [Women's Cancer Screening](https:\/\/www.mdanderson.org\/prevention-screening\/get-screened\/women-screening-exams.html)\n    - [Men's Cancer Screening](https:\/\/www.mdanderson.org\/prevention-screening\/get-screened\/men-screening-exams.html)\n  - [![](https:\/\/www.mdanderson.org\/content\/dam\/mdanderson\/images\/publications\/focused-on-health\/2015\/xWEB-Tanya-Moseley-3D-mammo.jpg.resize.jpg.pagespeed.ic.uCtB516AKn.jpg) Cancer Prevention Center The Lyda Hill Cancer Prevention Center provides cancer risk assessment, screening and diagnostic services.](https:\/\/www.mdanderson.org\/patients-family\/diagnosis-treatment\/care-centers-clinics\/cancer-prevention-center.html)\n- [Donors & Volunteers](https:\/\/www.mdanderson.org\/donors-volunteers.html)\n  - Donate\n    \n    - Donate\n    - [Donate Home](https:\/\/www.mdanderson.org\/donors-volunteers\/donate.html)\n    - [Raise Money](https:\/\/www.mdanderson.org\/donors-volunteers\/donate\/raise-money.html)\n    - [Honor Loved Ones](https:\/\/www.mdanderson.org\/donors-volunteers\/donate\/honor-loved-ones.html)\n    - [Create Your Legacy](https:\/\/www.mdanderson.org\/donors-volunteers\/donate\/planned-giving.html)\n    - [Endowments](https:\/\/www.mdanderson.org\/donors-volunteers\/donate\/endowments.html)\n    - [Caring Fund](https:\/\/www.mdanderson.org\/donors-volunteers\/donate\/md-anderson-caring-fund.html)\n    - [Matching Gifts](https:\/\/www.mdanderson.org\/donors-volunteers\/donate\/matching-gifts.html)\n    - [Foundation and Corporation Relations](https:\/\/www.mdanderson.org\/donors-volunteers\/donate\/foundation-and-corporation-relations.html)\n  - Volunteer\n    \n    - Volunteer\n    - [Volunteer Home](https:\/\/www.mdanderson.org\/donors-volunteers\/volunteer.html)\n    - [On-Site Volunteers](https:\/\/www.mdanderson.org\/donors-volunteers\/volunteer\/on-site-volunteers.html)\n    - [Volunteer Endowment](https:\/\/www.mdanderson.org\/donors-volunteers\/volunteer\/endowments.html)\n    - [Patient Experience](https:\/\/www.mdanderson.org\/donors-volunteers\/volunteer\/patient-experience.html)\n    - [Children's Cancer Hospital Councils](https:\/\/www.mdanderson.org\/donors-volunteers\/volunteer\/childrens-cancer-hospital-councils.html)\n  - Other Ways to Help\n    \n    - Other Ways to Help\n    - [Other Ways to Help Home](https:\/\/www.mdanderson.org\/donors-volunteers\/other-ways-to-help.html)\n    - [Give Blood](https:\/\/www.mdanderson.org\/donors-volunteers\/other-ways-to-help\/give-blood.html)\n    - [Shop UT MD Anderson](https:\/\/www.mdanderson.org\/donors-volunteers\/other-ways-to-help\/shop-md-anderson.html)\n    - [Donate Goods or Services](https:\/\/www.mdanderson.org\/donors-volunteers\/other-ways-to-help\/donate-goods-or-services.html)\n    - [Attend Events](https:\/\/www.mdanderson.org\/donors-volunteers\/other-ways-to-help\/attend-events.html)\n    - [Cord Blood Bank](https:\/\/www.mdanderson.org\/donors-volunteers\/other-ways-to-help\/cord-blood-bank.html)\n  - Corporate Alliances\n    \n    - Corporate Alliances\n    - [Corporate Alliances Home](https:\/\/www.mdanderson.org\/donors-volunteers\/corporate-alliances.html)\n    - [Current Alliances](https:\/\/www.mdanderson.org\/donors-volunteers\/corporate-alliances\/current-alliances.html)\n  - [![](https:\/\/www.mdanderson.org\/content\/dam\/mdanderson\/images\/hero-images\/Integrated%20Media\/xoph-web-promo-image-tagline.png.resize.jpg.pagespeed.ic.twSaqq5_GV.jpg) Join the Campaign to End Cancer Help us celebrate and fuel the groundbreaking innovations and transformative advancements that define UT MD Anderson.](https:\/\/onlypossiblehere.mdanderson.org\/)\n- [For Physicians](https:\/\/www.mdanderson.org\/for-physicians.html)\n  - Refer a Patient\n    \n    - Refer a Patient\n    - [Refer a Patient Home](https:\/\/www.mdanderson.org\/for-physicians\/refer-a-patient.html)\n    - [Health Care Provider Resource Center](https:\/\/www.mdanderson.org\/for-physicians\/refer-a-patient\/health-care-provider-resource-center.html)\n    - [Referring Provider Team](https:\/\/www.mdanderson.org\/for-physicians\/refer-a-patient\/referring-provider-team.html)\n    - [Insurance Information](https:\/\/www.mdanderson.org\/for-physicians\/refer-a-patient\/insurance-information.html)\n    - [International Referrals](https:\/\/www.mdanderson.org\/for-physicians\/refer-a-patient\/international-referrals.html)\n    - [myMDAnderson for Physicians](https:\/\/www.mdanderson.org\/for-physicians\/refer-a-patient\/mymdanderson-for-physicians.html)\n    - [Second Opinion Pathology](https:\/\/www.mdanderson.org\/for-physicians\/refer-a-patient\/second-opinion-pathology.html)\n  - Clinical Trials\n    \n    - Clinical Trials\n    - [Clinical Trials Home](https:\/\/www.mdanderson.org\/for-physicians\/clinical-trials.html)\n  - Clinical Tools & Resources\n    \n    - Clinical Tools & Resources\n    - [Clinical Tools & Resources Home](https:\/\/www.mdanderson.org\/for-physicians\/clinical-tools-resources.html)\n    - [Clinical Calculators](https:\/\/www.mdanderson.org\/for-physicians\/clinical-tools-resources\/clinical-calculators.html)\n    - [Clinical Practice Algorithms](https:\/\/www.mdanderson.org\/for-physicians\/clinical-tools-resources\/clinical-practice-algorithms.html)\n  - [![](https:\/\/www.mdanderson.org\/content\/dam\/mdanderson\/images\/l2-l3-hero\/xsujit_prabhu_physicians_nav.jpg.resize.jpg.pagespeed.ic.8yuRzUyAsr.jpg) myMDAnderson for Physicians Our personalized portal helps you refer your patients and communicate with their UT MD Anderson care team.](https:\/\/www.mdanderson.org\/for-physicians\/refer-a-patient\/mymdanderson-for-physicians.html)\n- [Research](https:\/\/www.mdanderson.org\/research.html)\n  - Departments, Labs and Institutes\n    \n    - Departments, Labs and Institutes\n    - [Departments, Labs and Institutes Home](https:\/\/www.mdanderson.org\/research\/departments-labs-institutes.html)\n    - [Departments and Divisions](https:\/\/www.mdanderson.org\/research\/departments-labs-institutes\/departments-divisions.html)\n    - [Labs](https:\/\/www.mdanderson.org\/research\/departments-labs-institutes\/labs.html)\n    - [Research Centers and Programs](https:\/\/www.mdanderson.org\/research\/departments-labs-institutes\/programs-centers.html)\n    - [Institutes](https:\/\/www.mdanderson.org\/research\/departments-labs-institutes\/institutes.html)\n    - [Specialized Programs of Research Excellence (SPORE) Grants](https:\/\/www.mdanderson.org\/research\/departments-labs-institutes\/spores.html)\n  - Research Areas\n    \n    - Research Areas\n    - [Research Areas Home](https:\/\/www.mdanderson.org\/research\/research-areas.html)\n    - [Basic Science](https:\/\/www.mdanderson.org\/research\/research-areas\/basic-science.html)\n    - [Translational Research](https:\/\/www.mdanderson.org\/research\/research-areas\/translational-research.html)\n    - [Clinical Research](https:\/\/www.mdanderson.org\/research\/research-areas\/clinical-research.html)\n    - [Prevention & Personalized Risk Assessment](https:\/\/www.mdanderson.org\/research\/research-areas\/prevention-personalized-risk-assessment.html)\n  - Research Resources\n    \n    - Research Resources\n    - [Research Resources Home](https:\/\/www.mdanderson.org\/research\/research-resources.html)\n    - [Excellence in Science](https:\/\/www.mdanderson.org\/research\/research-resources\/excellence-in-science.html)\n    - [Core Facilities and Services](https:\/\/www.mdanderson.org\/research\/research-resources\/core-facilities.html)\n    - [Conferences & Seminars](https:\/\/www.mdanderson.org\/research\/research-resources\/conferences-seminars.html)\n    - [Why Research at UT MD Anderson](https:\/\/www.mdanderson.org\/research\/research-resources\/why-research.html)\n    - [STRIDE](https:\/\/www.mdanderson.org\/research\/research-resources\/stride.html)\n    - [NCI-Designated Cancer Center](https:\/\/www.mdanderson.org\/research\/research-resources\/nci-designated-cancer-center.html)\n  - [![](https:\/\/www.mdanderson.org\/content\/dam\/mdanderson\/images\/moonshots\/researchplatforms\/Clinical-Trial\/xCLL_Jan_Burger_175_resized.jpg.resize.jpg.pagespeed.ic.M81owwTRNc.jpg) Clinical Trials As part of our mission to eliminate cancer, UT MD Anderson researchers conduct hundreds of clinical trials to test new treatments for both common and rare cancers.](https:\/\/www.mdanderson.org\/patients-family\/diagnosis-treatment\/clinical-trials.html)\n- [Education & Training](https:\/\/www.mdanderson.org\/education-training.html)\n  - Degree-Granting Schools\n    \n    - Degree-Granting Schools\n    - [Degree-Granting Schools Home](https:\/\/www.mdanderson.org\/education-training\/degree-granting-schools.html)\n    - [School of Health Professions](https:\/\/www.mdanderson.org\/education-training\/degree-granting-schools\/school-of-health-professions.html)\n    - [MD Anderson UTHealth Houston Graduate School](https:\/\/www.mdanderson.org\/education-training\/degree-granting-schools\/graduate-school-of-biomedical-sciences.html)\n    Education Resources\n    \n    - Education Resources\n    - [Education Resources Home](https:\/\/www.mdanderson.org\/education-training\/education-resources.html)\n    - [Alumni Relations](https:\/\/www.mdanderson.org\/education-training\/education-resources\/alumni-relations.html)\n    - [Education Design Services](https:\/\/www.mdanderson.org\/education-training\/education-resources\/education-design-services.html)\n    - [Awards & Recognitions](https:\/\/www.mdanderson.org\/education-training\/education-resources\/awards-recognitions.html)\n    - [Academic Mentoring Council](https:\/\/www.mdanderson.org\/education-training\/education-resources\/academic-mentoring-council.html)\n    - [Why UT MD Anderson & Houston](https:\/\/www.mdanderson.org\/education-training\/education-resources\/why-train-at-md-anderson-houston.html)\n  - Research Training\n    \n    - Research Training\n    - [Research Training Home](https:\/\/www.mdanderson.org\/education-training\/research-training.html)\n    - [Early Career Pathway Programs](https:\/\/www.mdanderson.org\/education-training\/research-training\/early-career-pathway-programs.html)\n    - [Predoctoral Training](https:\/\/www.mdanderson.org\/education-training\/research-training\/predoctoral-training.html)\n    - [Postdoctoral Training](https:\/\/www.mdanderson.org\/education-training\/research-training\/postdoctoral-training.html)\n    - [Mentored Faculty Programs](https:\/\/www.mdanderson.org\/education-training\/research-training\/mentored-faculty-programs.html)\n    - [Career Development](https:\/\/www.mdanderson.org\/education-training\/research-training\/career-development.html)\n  - Clinical Training\n    \n    - Clinical Training\n    - [Clinical Training Home](https:\/\/www.mdanderson.org\/education-training\/clinical-training.html)\n    - [Graduate Medical Education](https:\/\/www.mdanderson.org\/education-training\/clinical-training\/graduate-medical-education.html)\n    - [Clinical Education for Non-Physicians](https:\/\/www.mdanderson.org\/education-training\/clinical-training\/clinical-education-for-non-physicians.html)\n    - [Nursing Education & Training](https:\/\/www.mdanderson.org\/education-training\/clinical-training\/nursing-education.html)\n    - [Continuing Education & Review Courses](https:\/\/www.mdanderson.org\/education-training\/clinical-training\/certificate-programs-review-courses.html)\n    - [Simulation Center](https:\/\/www.mdanderson.org\/education-training\/clinical-training\/simulation-center.html)\n  - Continuing Education & Professional Development\n    \n    - Continuing Education & Professional Development\n    - [Continuing Education & Professional Development Home](https:\/\/www.mdanderson.org\/education-training\/continuing-education-professional-development.html)\n    - [Continuing Professional Education\/Conferences](https:\/\/www.mdanderson.org\/education-training\/continuing-education-professional-development\/continuing-professional-education-conferences.html)\n    - [Administrative Internships & Fellowships](https:\/\/www.mdanderson.org\/education-training\/continuing-education-professional-development\/administrative-internships-fellowships.html)\n    - [Cancer Survivorship Professional Education](https:\/\/www.mdanderson.org\/education-training\/continuing-education-professional-development\/cancer-survivorship-program.html)\n    - [Leadership Institute](https:\/\/www.mdanderson.org\/education-training\/continuing-education-professional-development\/leadership-institute.html)\n    - [Patient Home Visits](https:\/\/www.mdanderson.org\/education-training\/continuing-education-professional-development\/patient-home-visits.html)\n  - Outreach Programs\n    \n    - Outreach Programs\n    - [Outreach Programs Home](https:\/\/www.mdanderson.org\/education-training\/outreach-programs.html)\n    - [Project ECHO](https:\/\/www.mdanderson.org\/education-training\/outreach-programs\/project-echo.html)\n    - [Observer Programs](https:\/\/www.mdanderson.org\/education-training\/outreach-programs\/observer-programs.html)\n    - [Comparative Effectiveness Training (CERTaIN)](https:\/\/www.mdanderson.org\/education-training\/outreach-programs\/comparative-effectiveness-research-training.html)\n    - [Faculty Speakers Bureau](https:\/\/www.mdanderson.org\/education-training\/outreach-programs\/faculty-speakers-bureau.html)\n  - [Apply to SHP Choose from 12 allied health programs at School of Health Professions.](https:\/\/www.mdanderson.org\/education-training\/degree-granting-schools\/school-of-health-professions\/prospective-students.html)\n    [Research Trainees View open postdoctoral and other research trainee positions.](https:\/\/www.mdanderson.org\/education-training\/research-training.html)\n    [GME Fellowships Learn about our graduate medical education residency and fellowship opportunities.](https:\/\/www.mdanderson.org\/education-training\/clinical-training\/graduate-medical-education\/residencies-fellowships.html)\n\n- [Cancerwise Blog](https:\/\/www.mdanderson.org\/cancerwise.html)\n- [2025](https:\/\/www.mdanderson.org\/cancerwise\/2025.html)\n- [05](https:\/\/www.mdanderson.org\/cancerwise\/2025\/05.html)\n- How much caffeine is too much?\n\n[Top](https:\/\/www.mdanderson.org\/cancerwise\/how-much-caffeine-is-too-much.h00-159776445.html)\n\nJump To:\n\n[Back](https:\/\/www.mdanderson.org\/cancerwise.html)\n\n- [Diseases](https:\/\/www.mdanderson.org\/cancerwise.dir.html)\n  - [Acoustic Neuroma (18)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/diseases\/acoustic-neuroma)\n  - [Adrenal Gland Tumor (18)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/diseases\/adrenal-gland-tumor)\n  - [Anal Cancer (68)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/diseases\/anal-cancer)\n  - [Anemia (2)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/diseases\/anemia)\n  - [Appendix Cancer (18)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/diseases\/appendix-cancer)\n  - [Bile Duct Cancer (24)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/diseases\/bile-duct-cancer)\n  - [Bladder Cancer (68)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/diseases\/bladder-cancer)\n  - [Brain Metastases (24)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/diseases\/brain-metastases)\n  - [Brain Tumor (234)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/diseases\/brain-tumor)\n  - [Breast Cancer (690)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/diseases\/breast-cancer)\n  - [Breast Implant-Associated Anaplastic Large Cell Lymphoma (2)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/diseases\/breast-implant-associated-anaplastic-large-cell-lymphoma)\n  - [Cancer of Unknown Primary (4)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/diseases\/cancer-of-unknown-primary)\n  - [Carcinoid Tumor (8)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/diseases\/carcinoid-tumor)\n  - [Cervical Cancer (146)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/diseases\/cervical-cancer)\n  - [Colon Cancer (160)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/diseases\/colon-cancer)\n  - [Colorectal Cancer (134)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/diseases\/colorectal-cancer)\n  - [Endocrine Tumor (4)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/diseases\/endocrine-tumor)\n  - [Endometrial Cancer (78)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/diseases\/uterine-cancer)\n  - [Esophageal Cancer (42)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/diseases\/esophageal-cancer)\n  - [Eye Cancer (36)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/diseases\/eye-cancer)\n  - [Fallopian Tube Cancer (8)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/diseases\/fallopian-tube-cancer)\n  - [Germ Cell Tumor (2)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/diseases\/germ-cell-tumor)\n  - [Gestational Trophoblastic Disease (2)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/diseases\/gestational-trophoblastic-disease)\n  - [Head and Neck Cancer (22)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/diseases\/head-and-neck-cancer)\n  - [Kidney Cancer (126)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/diseases\/kidney-cancer)\n  - [Leukemia (322)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/diseases\/leukemia)\n  - [Liver Cancer (54)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/diseases\/liver-cancer)\n  - [Lung Cancer (242)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/diseases\/lung-cancer)\n  - [Lymphoma (282)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/diseases\/lymphoma)\n  - [Mesothelioma (14)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/diseases\/mesothelioma)\n  - [Metastasis (30)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/diseases\/metastasis)\n  - [Multiple Myeloma (98)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/diseases\/multiple-myeloma)\n  - [Myelodysplastic Syndrome (58)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/diseases\/myelodysplastic-syndrome)\n  - [Myeloproliferative Neoplasm (6)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/diseases\/myeloproliferative-disorder)\n  - [Neuroendocrine Tumors (16)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/diseases\/neuroendocrine-tumors)\n  - [Oral Cancer (98)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/diseases\/oral-cancer)\n  - [Ovarian Cancer (156)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/diseases\/ovarian-cancer)\n  - [Pancreatic Cancer (124)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/diseases\/pancreatic)\n  - [Parathyroid Disease (2)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/diseases\/parathyroid-disease)\n  - [Penile Cancer (8)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/diseases\/penile-cancer)\n  - [Pituitary Tumor (6)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/diseases\/pituitary-tumor)\n  - [Prostate Cancer (150)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/diseases\/prostate-cancer)\n  - [Rectal Cancer (58)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/diseases\/rectal-cancer)\n  - [Renal Medullary Carcinoma (6)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/diseases\/renal-medullary-carcinoma)\n  - [Salivary Gland Cancer (16)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/diseases\/salivary-gland-cancer)\n  - [Sarcoma (240)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/diseases\/sarcoma)\n  - [Skin Cancer (288)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/diseases\/skin-cancer)\n  - [Skull Base Tumors (60)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/diseases\/skull-base-tumors)\n  - [Spinal Tumor (14)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/diseases\/spinal-tumor)\n  - [Stomach Cancer (60)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/diseases\/stomach-cancer)\n  - [Testicular Cancer (30)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/diseases\/testicular-cancer)\n  - [Throat Cancer (86)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/diseases\/throat-cancer)\n  - [Thymoma (6)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/diseases\/thymoma)\n  - [Thyroid Cancer (94)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/diseases\/thyroid-cancer)\n  - [Tonsil Cancer (30)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/diseases\/tonsil-cancer)\n  - [Vaginal Cancer (16)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/diseases\/vaginal-cancer)\n  - [Vulvar Cancer (22)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/diseases\/vulvar-cancer)\n- [Cancer Topic](https:\/\/www.mdanderson.org\/cancerwise.dir.html)\n  - [Adolescent and Young Adult Cancer Issues (34)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/cancer-topics\/adolescent-and-young-adult-cancer-issues)\n  - [Advance Care Planning (16)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/cancer-topics\/advance-care-planning-advanced-directives)\n  - [Blood Donation (22)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/cancer-topics\/blood-donation)\n  - [Bone Health (10)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/cancer-topics\/bone-health)\n  - [COVID-19 (360)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/cancer-topics\/covid-19)\n  - [Cancer Recurrence (122)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/cancer-topics\/cancer-recurrence)\n  - [Childhood Cancer Issues (114)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/cancer-topics\/childhood-cancer-issues)\n  - [Clinical Trials (594)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/cancer-topics\/clinical-trials)\n  - [Complementary Integrative Medicine (20)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/cancer-topics\/complementary-integrative-medicine)\n  - [Cytogenetics (2)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/cancer-topics\/cytogenetics)\n  - [DNA Methylation (2)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/cancer-topics\/dna-methylation)\n  - [Diagnosis (242)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/cancer-topics\/diagnosis)\n  - [Epigenetics (4)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/cancer-topics\/epigenetics)\n  - [Fertility (66)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/cancer-topics\/fertility)\n  - [Follow-up Guidelines (2)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/cancer-topics\/follow-up-guidelines)\n  - [Health Disparities (12)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/cancer-topics\/health-disparities)\n  - [Hereditary Cancer Syndromes (124)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/cancer-topics\/hereditary-cancer-syndromes)\n  - [Immunology (12)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/cancer-topics\/immunology)\n  - [Li-Fraumeni Syndrome (6)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/cancer-topics\/li-fraumeni-syndrome)\n  - [Mental Health (130)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/cancer-topics\/mental-health)\n  - [Molecular Diagnostics (8)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/cancer-topics\/molecular-diagnostics)\n  - [Pain Management (60)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/cancer-topics\/pain-management)\n  - [Palliative Care (6)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/cancer-topics\/palliative-care)\n  - [Pathology (10)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/cancer-topics\/pathology)\n  - [Physical Therapy (18)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/cancer-topics\/physical-therapy)\n  - [Pregnancy (18)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/cancer-topics\/pregnancy)\n  - [Prevention (1002)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/cancer-topics\/prevention)\n  - [Research (248)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/cancer-topics\/research)\n  - [Second Opinion (86)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/cancer-topics\/second-opinion)\n  - [Sexuality (18)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/cancer-topics\/sexuality)\n  - [Side Effects (650)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/cancer-topics\/side-effects)\n  - [Sleep Disorders (12)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/cancer-topics\/sleep-disorders)\n  - [Stem Cell Transplantation Cellular Therapy (206)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/cancer-topics\/stem-cell-transplantation-cellular-therapy)\n  - [Support (420)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/cancer-topics\/support)\n  - [Survivorship (330)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/cancer-topics\/survivorship)\n  - [Symptoms (186)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/cancer-topics\/symptoms)\n  - [Treatment (1728)](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/category\/content\/cq:tags\/md-anderson\/cancer-topics\/treatment)\n\n# How much caffeine is too much?\nBY  [Gina Van Thomme](https:\/\/www.mdanderson.org\/cancerwise.dir.html\/author\/Gina%20Van%20Thomme)\n\n\\|\n\nClose\n\nShare this article\n\nVia social media:\n\nOr copy the link:\n\nCopy to clipboard Copy\n\n5 minute read \\| Published May 09, 2025\n\nMedically Reviewed \\|\n\nLast reviewed by Kaylie Brown on May 09, 2025\n\nCaffeine does more than just provide a boost of energy. For many, it’s a daily ritual.\n\nA morning cup of coffee can make leaving a warm bed slightly more bearable. A shot of espresso can perk you up during that afternoon slump. Maybe you even rely on the occasional energy drink to fuel a late-night study session.\n\nBut you might wonder how it impacts your health. How much is too much? And is there anything we can do to make our caffeinated drinks healthier?\n\nClinical dietitian Kaylie Brown helps answer these questions and more.\n\n## How does caffeine work?\nYou likely already know how the right amount of caffeine makes you *feel*: fueled and ready to take on the day. But how else does caffeine affect the body?\n\nThe National Institutes of Health’s [National Library of Medicine](https:\/\/medlineplus.gov\/caffeine.html) writes that caffeine can:\n\n- Stimulate the central nervous system\n- Act as a diuretic, increasing urination\n- Cause your body to release more stomach acid\n- Possibly impact calcium absorption\n- Raise blood pressure\n## How much caffeine is too much?\nMost adults can consume about 400 milligrams of caffeine per day without negative effects, the [Food and Drug Administration](https:\/\/www.fda.gov\/consumers\/consumer-updates\/spilling-beans-how-much-caffeine-too-much) (FDA) writes.\n\n“A typical dose of caffeine is around 70 to 100 milligrams per drink,” Brown says.\n\nBut many caffeinated beverages, like the pot of coffee in your office or a to-go latte, don’t come with ingredient labels that say exactly how much caffeine they contain.\n\nResources like the [National Library of Medicine](https:\/\/medlineplus.gov\/caffeine.html) provide general caffeine ranges for popular beverages. This can help you get a better idea of how much caffeine you are consuming.\n\n- Coffee (8 ounces): 95-200 milligrams\n- Energy drink (8 ounces): 70-100 milligrams\n- Cola (12 ounces): 35-45 milligrams\n- Tea (8 ounces): 14-60 milligrams\n## What factors impact caffeine tolerance?\nWhile general caffeine recommendations can give you a sense of how much caffeine is safe to consume, caffeine intake varies from person to person. That means your caffeine intake might look different from that of a friend who can drink coffee late into the afternoon and still manage to fall asleep without issue.\n\nBrown says caffeine tolerance can vary based on factors such as:\n\n- How much caffeine you drink\n- How quickly you drink it\n- How long it takes your body to eliminate the caffeine\n- Body composition\n- Caffeine sensitivity\n- Medications\n- Health conditions\n## What happens when you have too much caffeine?\nYour body can provide you with some helpful signs that you’ve over-caffeinated. Brown notes that symptoms of drinking too much caffeine include:\n\n- Increased heart rate\n- Heart palpitations\n- High blood pressure\n- Insomnia\n- Sleep disturbances\n- Anxiety\n- Jitters\n- Gastrointestinal upset\n- Nausea\n- Headaches\n- Seizures\n## Is decaf better than a caffeinated drink?\nMuch like your unique coffee order, this answer might look different from one person to the next.\n\n“I think that making these decisions depends on intake, overall health goals, and tolerance and side effects,” Brown says.\n\nA registered dietitian or doctor can help you decide if drinking caffeine is a good choice for you.\n\nReady to dabble in the world of decaf? Keep in mind that cutting out caffeine abruptly can have side effects like headaches, fatigue and drowsiness, Brown says.\n\n“If you choose to cut back on your caffeine intake, I recommend doing so gradually,” she says.\n\nAnother tip? If you’re trying to use medication to relieve a headache caused by a lack of caffeine, Brown says to check that it doesn’t contain more caffeine.\n\n## Should anyone avoid caffeine altogether?\nIt depends. Caffeine isn’t recommended for people who have certain medical conditions or who are taking some medications, Brown says.\n\nFor example, she recommends that people with the following medical conditions watch their caffeine intake:\n\n- Gastroesophageal reflux disease (GERD)\n- Heart disease\n- Hepatic impairment\n- Hypersensitivity\n- Iron deficiency anemia\n- Peptic ulcer disease\n- Pregnancy\n- Kidney and\/or urinary impairments\n- Seizures\n- Severe anxiety\n- Irregular heartbeats\n\nStill unsure whether it's safe for you to consume caffeine? It’s best to consult with your care team.\n\n## Is caffeine safe for cancer patients?\nThe answer to this question will look different for each person.\n\nHere are a few factors Brown says play into whether it’s safe for someone in [cancer treatment](https:\/\/www.mdanderson.org\/treatment-options.html) to consume caffeine.\n\n- Medication\n- Medical and surgical history\n- [Side effects](https:\/\/www.mdanderson.org\/patients-family\/diagnosis-treatment\/emotional-physical-effects.html), such as [dehydration](https:\/\/www.mdanderson.org\/patients-family\/diagnosis-treatment\/emotional-physical-effects\/dehydration.html) and [diarrhea](https:\/\/www.mdanderson.org\/patients-family\/diagnosis-treatment\/emotional-physical-effects\/bowel-management.html)\n\n“It is best to work with your medical team to determine what’s best for you,” she says.\n\n## How can we make caffeinated beverages healthier?\nCaffeine can affect your health, but so can other beverage choices.\n\n“The largest concerns with coffee intake and health are less directly related to moderate amounts of caffeine consumption, but rather the habits around those beverages,” Brown says.\n\nFor example, while the amount of caffeine in some specialty coffee or energy drinks may be well within the FDA’s safe daily caffeine recommendations, some can single-handedly account for more added sugar than it is [recommended to consume in a day](https:\/\/www.mdanderson.org\/cancerwise\/how-many-grams-of-added-sugar-should-you-have-per-day.h00-159623379.html#:~:text=MD%20Anderson%20follows%20the%20American,rich%20in%20healthy%2C%20nutritious%20foods.). Likewise, dairy products like milk, cold foam and creamer can be high in trans-fat and saturated fat.\n\nIf you’re looking for healthier ways to change up the taste of your coffee, here are Brown's suggestions.\n\n- Flavor it with cinnamon or nutmeg.\n- Use natural sugars like maple syrup or pasteurized honey rather than artificial sweeteners. These options are still added sugar, but it doesn’t take much to sweeten your drink — try starting with a teaspoon or two. This can ultimately help you consume less sugar overall.\n- Not a fan of strong coffee? Rather than add sweetener, try adding skim or low-fat milk or water.\n\n“It is OK to add small amounts of items like sugar, creamer or flavorings to your coffee,” Brown says. “However, be mindful to check the ingredient list and monitor overall intake of excess calories and added sugar as this could contribute to excess weight gain.”\n\n**[Request an appointment at MD Anderson online](https:\/\/my.mdanderson.org\/RequestAppointment) or call 1-877-632-6789.**\n\n## Related Cancerwise Stories\n[![entity1](https:\/\/www.mdanderson.org\/images\/publications\/cancerwise\/Generics\/cw-water-intake.jpg) How much water should you drink a day?](https:\/\/www.mdanderson.org\/cancerwise\/how-much-water-should-you-drink-a-day.h00-159778812.html)\n***\n[![entity2](https:\/\/www.mdanderson.org\/images\/publications\/cancerwise\/Generics\/cw-royal-jelly.jpg) What is royal jelly?](https:\/\/www.mdanderson.org\/cancerwise\/what-is-royal-jelly.h00-159773289.html)\n***\n[![entity3](https:\/\/www.mdanderson.org\/images\/publications\/cancerwise\/Generics\/cw-woman-drinking-sports-beverage.jpg) Electrolytes 101: What to know](https:\/\/www.mdanderson.org\/cancerwise\/electrolyte-101-what-to-know.h00-159699912.html)\n***\n[![entity4](https:\/\/www.mdanderson.org\/images\/publications\/cancerwise\/Generics\/cw-protein-needs.jpg) How much protein do I need? A dietitian answers](https:\/\/www.mdanderson.org\/cancerwise\/how-much-protein-do-i-need-a-dietitian-answers.h00-159781179.html)\n***\n[![entity5](https:\/\/www.mdanderson.org\/images\/publications\/cancerwise\/Generics\/cw-how-much-sleep.jpg) How much sleep do I need?](https:\/\/www.mdanderson.org\/cancerwise\/how-much-sleep-do-i-need.h00-159780390.html)\n\n![A person in an orange shirt pours coffee from a silver moka pot into a white mug.](https:\/\/www.mdanderson.org\/content\/mda\/en\/cancerwise\/2025\/05\/how-much-caffeine-is-too-much\/jcr:content\/blog\/adaptiveimage.resize.278.0.medium.jpg\/1743456737120.jpg)\n\nA typical dose of caffeine is around 70 to 100 milligrams per drink.\n\nKaylie Brown\n\nClinical Dietitian\n\n[Share Your Story](https:\/\/www4.mdanderson.org\/cancer_survivors\/Story.cfc?method=index)\n\n[Request an Appointment](https:\/\/www.mdanderson.org\/about-md-anderson\/contact-us\/askmdanderson\/appointments.html)\n\n[Reduce Your Cancer Risk](https:\/\/www.mdanderson.org\/prevention-screening\/manage-your-risk.html)\n\n### Subscribe to Focused on Health\n\n## Help \\#EndCancer\n### Give Now\nYour gift will help make a tremendous difference.\n\n[Donate](https:\/\/gifts.mdanderson.org\/Default.aspx?tsid=37435 \" Opens a new window\")\n\n### Donate Blood\nOur patients depend on blood and platelet donations.\n\n[Make an appointment](https:\/\/www.mdandersonbloodbank.org\/ \" Opens a new window\")\n\n### Shop UT MD Anderson\nShow your support for our mission through branded merchandise.\n\n[View products](https:\/\/shop.mdanderson.org\/ \" Opens a new window\")\n\nSubscribe to our Cancerwise newsletter\n\n[![UT MD Anderson logo](https:\/\/www.mdanderson.org\/content\/mda\/en\/jcr:content\/footer\/desktoplogo.resize.png)![UT MD Anderson logo](https:\/\/www.mdanderson.org\/content\/mda\/en\/jcr:content\/footer\/xmobilelogo.resize.png.pagespeed.ic.j92o1m7p2y.png)](https:\/\/www.mdanderson.org\/)\n\n- Explore\n- [Patients & Family](https:\/\/www.mdanderson.org\/patients-family.html)\n- [Prevention & Screening](https:\/\/www.mdanderson.org\/prevention-screening.html)\n- [Donors & Volunteers](https:\/\/www.mdanderson.org\/donors-volunteers.html)\n- [For Physicians](https:\/\/www.mdanderson.org\/for-physicians.html)\n- [Research](https:\/\/www.mdanderson.org\/research.html)\n- [Education & Training](https:\/\/www.mdanderson.org\/education-training.html)\n- [Clinical Trials](https:\/\/www.mdanderson.org\/patients-family\/diagnosis-treatment\/clinical-trials.html)\n- [Languages](https:\/\/www.mdanderson.org\/about-md-anderson\/contact-us\/languages.html)\n\n- About\n- [About UT MD Anderson](https:\/\/www.mdanderson.org\/about-md-anderson.html)\n- [Careers](https:\/\/jobs.mdanderson.org\/)\n- [Blog](https:\/\/www.mdanderson.org\/cancerwise.html)\n- [Newsroom](https:\/\/www.mdanderson.org\/newsroom.html)\n- [For Employees](https:\/\/www.mdanderson.org\/about-md-anderson\/employee-resources.html)\n- [Merchandise](https:\/\/shop.mdanderson.org\/)\n- [Title IX Reporting (Sexual Misconduct)](https:\/\/www.mdanderson.org\/about-md-anderson\/business-legal\/legal-and-policy\/legal-statements\/title-ix.html)\n- [Price Transparency](https:\/\/www.mdanderson.org\/patients-family\/becoming-our-patient\/planning-for-care\/insurance-billing-financial-support\/health-care-disclosures.html)\n\n- Finding Your Way\n- [Our Doctors](https:\/\/faculty.mdanderson.org\/)\n- [Locations](https:\/\/www.mdanderson.org\/about-md-anderson\/our-locations.html)\n- [Directions](https:\/\/www.mdanderson.org\/patients-family\/becoming-our-patient\/getting-to-md-anderson\/wayfinding.html)\n- [Sitemap](https:\/\/www.mdanderson.org\/patients-family\/html-sitemap.html)\n\n- DIGITAL ACCESSIBILITY\n- [Accessibility Policy](https:\/\/www.mdanderson.org\/about-md-anderson\/business-legal\/legal-and-policy\/legal-statements\/privacy-policy\/accessibility-policy.html) [![MD Anderson works with Level Access to ensure our website is accessible and functional for all users. Free assistive technology is provided for people with physical disabilities. To learn more or to download the assistive technology tool, visit https:\/\/www.levelaccess.com\/MDAnderson](https:\/\/www.mdanderson.org\/etc.clientlibs\/mda\/clientlibs\/mda-web\/clientlib-site\/resources\/images\/eA_Icon_Black.svg)](https:\/\/www.levelaccess.com\/MDAnderson)\n\n- GET IN TOUCH\n- [Call 1-877-632-6789](tel:18776326789)\n- [Ask a question](https:\/\/www.mdanderson.org\/about-md-anderson\/contact-us\/askmdanderson\/ask-a-question.html)\n\n- Stay Connected\n- Previous\n  \n  Next\n\n- Cancerwise Podcast\n- Previous\n  \n  Next\n\n- More\n- [Website Privacy Policy](https:\/\/www.mdanderson.org\/about-md-anderson\/business-legal\/legal-and-policy\/legal-statements\/privacy-policy.html)\n- [Legal Statement & Policies](https:\/\/www.mdanderson.org\/about-md-anderson\/business-legal\/legal-and-policy\/legal-statements.html)\n- [Reports to the State](https:\/\/www.mdanderson.org\/about-md-anderson\/facts-history\/u-t-system-reports.html)\n- [Emergency Alert Information](https:\/\/www3.mdanderson.org\/emergencyalert\/)\n- [State of Texas Links](https:\/\/www.mdanderson.org\/about-md-anderson\/state-of-texas-links.html)\n- [MD Anderson Cancer Network®](https:\/\/www.mdanderson.org\/about-md-anderson\/our-locations\/md-anderson-cancer-network.html)\n- [Vendors & Suppliers](https:\/\/www.mdanderson.org\/about-md-anderson\/business-legal\/doing-business\/vendors-and-suppliers.html)\n\n[![UT MD Anderson logo](https:\/\/www.mdanderson.org\/content\/mda\/en\/jcr:content\/footer\/xmobilelogo.resize.png.pagespeed.ic.j92o1m7p2y.png)](https:\/\/www.mdanderson.org\/)\n\nThe mission of The University of Texas MD Anderson Cancer Center is to eliminate cancer in Texas, the nation, and the world through outstanding programs that integrate patient care, research and prevention, and through education for undergraduate and graduate students, trainees, professionals, employees and the public.\n\n© 2026 The University of Texas MD Anderson Cancer Center. All rights reserved.","attrs_readable_markdown":"Caffeine does more than just provide a boost of energy. For many, it’s a daily ritual.\n\nA morning cup of coffee can make leaving a warm bed slightly more bearable. A shot of espresso can perk you up during that afternoon slump. Maybe you even rely on the occasional energy drink to fuel a late-night study session.\n\nBut you might wonder how it impacts your health. How much is too much? And is there anything we can do to make our caffeinated drinks healthier?\n\nClinical dietitian Kaylie Brown helps answer these questions and more.\n\n## How does caffeine work?\nYou likely already know how the right amount of caffeine makes you *feel*: fueled and ready to take on the day. But how else does caffeine affect the body?\n\nThe National Institutes of Health’s [National Library of Medicine](https:\/\/medlineplus.gov\/caffeine.html) writes that caffeine can:\n\n- Stimulate the central nervous system\n- Act as a diuretic, increasing urination\n- Cause your body to release more stomach acid\n- Possibly impact calcium absorption\n- Raise blood pressure\n## How much caffeine is too much?\nMost adults can consume about 400 milligrams of caffeine per day without negative effects, the [Food and Drug Administration](https:\/\/www.fda.gov\/consumers\/consumer-updates\/spilling-beans-how-much-caffeine-too-much) (FDA) writes.\n\n“A typical dose of caffeine is around 70 to 100 milligrams per drink,” Brown says.\n\nBut many caffeinated beverages, like the pot of coffee in your office or a to-go latte, don’t come with ingredient labels that say exactly how much caffeine they contain.\n\nResources like the [National Library of Medicine](https:\/\/medlineplus.gov\/caffeine.html) provide general caffeine ranges for popular beverages. This can help you get a better idea of how much caffeine you are consuming.\n\n- Coffee (8 ounces): 95-200 milligrams\n- Energy drink (8 ounces): 70-100 milligrams\n- Cola (12 ounces): 35-45 milligrams\n- Tea (8 ounces): 14-60 milligrams\n## What factors impact caffeine tolerance?\nWhile general caffeine recommendations can give you a sense of how much caffeine is safe to consume, caffeine intake varies from person to person. That means your caffeine intake might look different from that of a friend who can drink coffee late into the afternoon and still manage to fall asleep without issue.\n\nBrown says caffeine tolerance can vary based on factors such as:\n\n- How much caffeine you drink\n- How quickly you drink it\n- How long it takes your body to eliminate the caffeine\n- Body composition\n- Caffeine sensitivity\n- Medications\n- Health conditions\n## What happens when you have too much caffeine?\nYour body can provide you with some helpful signs that you’ve over-caffeinated. Brown notes that symptoms of drinking too much caffeine include:\n\n- Increased heart rate\n- Heart palpitations\n- High blood pressure\n- Insomnia\n- Sleep disturbances\n- Anxiety\n- Jitters\n- Gastrointestinal upset\n- Nausea\n- Headaches\n- Seizures\n## Is decaf better than a caffeinated drink?\nMuch like your unique coffee order, this answer might look different from one person to the next.\n\n“I think that making these decisions depends on intake, overall health goals, and tolerance and side effects,” Brown says.\n\nA registered dietitian or doctor can help you decide if drinking caffeine is a good choice for you.\n\nReady to dabble in the world of decaf? Keep in mind that cutting out caffeine abruptly can have side effects like headaches, fatigue and drowsiness, Brown says.\n\n“If you choose to cut back on your caffeine intake, I recommend doing so gradually,” she says.\n\nAnother tip? If you’re trying to use medication to relieve a headache caused by a lack of caffeine, Brown says to check that it doesn’t contain more caffeine.\n\n## Should anyone avoid caffeine altogether?\nIt depends. Caffeine isn’t recommended for people who have certain medical conditions or who are taking some medications, Brown says.\n\nFor example, she recommends that people with the following medical conditions watch their caffeine intake:\n\n- Gastroesophageal reflux disease (GERD)\n- Heart disease\n- Hepatic impairment\n- Hypersensitivity\n- Iron deficiency anemia\n- Peptic ulcer disease\n- Pregnancy\n- Kidney and\/or urinary impairments\n- Seizures\n- Severe anxiety\n- Irregular heartbeats\n\nStill unsure whether it's safe for you to consume caffeine? It’s best to consult with your care team.\n\n## Is caffeine safe for cancer patients?\nThe answer to this question will look different for each person.\n\nHere are a few factors Brown says play into whether it’s safe for someone in [cancer treatment](https:\/\/www.mdanderson.org\/treatment-options.html) to consume caffeine.\n\n- Medication\n- Medical and surgical history\n- [Side effects](https:\/\/www.mdanderson.org\/patients-family\/diagnosis-treatment\/emotional-physical-effects.html), such as [dehydration](https:\/\/www.mdanderson.org\/patients-family\/diagnosis-treatment\/emotional-physical-effects\/dehydration.html) and [diarrhea](https:\/\/www.mdanderson.org\/patients-family\/diagnosis-treatment\/emotional-physical-effects\/bowel-management.html)\n\n“It is best to work with your medical team to determine what’s best for you,” she says.\n\n## How can we make caffeinated beverages healthier?\nCaffeine can affect your health, but so can other beverage choices.\n\n“The largest concerns with coffee intake and health are less directly related to moderate amounts of caffeine consumption, but rather the habits around those beverages,” Brown says.\n\nFor example, while the amount of caffeine in some specialty coffee or energy drinks may be well within the FDA’s safe daily caffeine recommendations, some can single-handedly account for more added sugar than it is [recommended to consume in a day](https:\/\/www.mdanderson.org\/cancerwise\/how-many-grams-of-added-sugar-should-you-have-per-day.h00-159623379.html#:~:text=MD%20Anderson%20follows%20the%20American,rich%20in%20healthy%2C%20nutritious%20foods.). Likewise, dairy products like milk, cold foam and creamer can be high in trans-fat and saturated fat.\n\nIf you’re looking for healthier ways to change up the taste of your coffee, here are Brown's suggestions.\n\n- Flavor it with cinnamon or nutmeg.\n- Use natural sugars like maple syrup or pasteurized honey rather than artificial sweeteners. These options are still added sugar, but it doesn’t take much to sweeten your drink — try starting with a teaspoon or two. This can ultimately help you consume less sugar overall.\n- Not a fan of strong coffee? Rather than add sweetener, try adding skim or low-fat milk or water.\n\n“It is OK to add small amounts of items like sugar, creamer or flavorings to your coffee,” Brown says. “However, be mindful to check the ingredient list and monitor overall intake of excess calories and added sugar as this could contribute to excess weight gain.”\n\n**[Request an appointment at MD Anderson online](https:\/\/my.mdanderson.org\/RequestAppointment) or call 1-877-632-6789.**","meta_canonical":null}

3. Robots.txt Check

Query:

Response:

4. Spam/Ban Check

Query:

Response:

5. Seen Status Check

ℹ️ Skipped - page is already crawled

📄

INDEXABLE

✅

CRAWLED

2 days ago

🤖

ROBOTS ALLOWED

Page Info Filters

Filter	Status	Condition	Details
HTTP status	PASS	`download_http_code = 200`	HTTP 200
Age cutoff	PASS	`download_stamp > now() - 6 MONTH`	0.1 months ago
History drop	PASS	`isNull(history_drop_reason)`	No drop reason
Spam/ban	PASS	`fh_dont_index != 1 AND ml_spam_score = 0`	ml_spam_score=0
Canonical	PASS	`meta_canonical IS NULL OR = '' OR = src_unparsed`	Not set

Page Details

Property	Value
URL	https://www.mdanderson.org/cancerwise/how-much-caffeine-is-too-much.h00-159776445.html
Last Crawled	2026-04-12 21:03:16 (2 days ago)
First Indexed	2025-05-10 08:32:27 (11 months ago)
HTTP Status Code	200
Meta Title	How much caffeine is too much? \| UT MD Anderson
Meta Description	How much caffeine is it OK to drink a day? And what happens if you drink too much? Clinical dietitian Kaylie Brown answers these questions and more.
Meta Canonical	null
Boilerpipe Text	Caffeine does more than just provide a boost of energy. For many, it’s a daily ritual. A morning cup of coffee can make leaving a warm bed slightly more bearable. A shot of espresso can perk you up during that afternoon slump. Maybe you even rely on the occasional energy drink to fuel a late-night study session. But you might wonder how it impacts your health. How much is too much? And is there anything we can do to make our caffeinated drinks healthier? Clinical dietitian Kaylie Brown helps answer these questions and more. How does caffeine work? You likely already know how the right amount of caffeine makes you feel : fueled and ready to take on the day. But how else does caffeine affect the body? The National Institutes of Health’s National Library of Medicine writes that caffeine can: Stimulate the central nervous system Act as a diuretic, increasing urination Cause your body to release more stomach acid Possibly impact calcium absorption Raise blood pressure How much caffeine is too much? Most adults can consume about 400 milligrams of caffeine per day without negative effects, the Food and Drug Administration (FDA) writes. “A typical dose of caffeine is around 70 to 100 milligrams per drink,” Brown says. But many caffeinated beverages, like the pot of coffee in your office or a to-go latte, don’t come with ingredient labels that say exactly how much caffeine they contain. Resources like the National Library of Medicine provide general caffeine ranges for popular beverages. This can help you get a better idea of how much caffeine you are consuming. Coffee (8 ounces): 95-200 milligrams Energy drink (8 ounces): 70-100 milligrams Cola (12 ounces): 35-45 milligrams Tea (8 ounces): 14-60 milligrams What factors impact caffeine tolerance? While general caffeine recommendations can give you a sense of how much caffeine is safe to consume, caffeine intake varies from person to person. That means your caffeine intake might look different from that of a friend who can drink coffee late into the afternoon and still manage to fall asleep without issue. Brown says caffeine tolerance can vary based on factors such as: How much caffeine you drink How quickly you drink it How long it takes your body to eliminate the caffeine Body composition Caffeine sensitivity Medications Health conditions What happens when you have too much caffeine? Your body can provide you with some helpful signs that you’ve over-caffeinated. Brown notes that symptoms of drinking too much caffeine include: Increased heart rate Heart palpitations High blood pressure Insomnia Sleep disturbances Anxiety Jitters Gastrointestinal upset Nausea Headaches Seizures Is decaf better than a caffeinated drink? Much like your unique coffee order, this answer might look different from one person to the next. “I think that making these decisions depends on intake, overall health goals, and tolerance and side effects,” Brown says. A registered dietitian or doctor can help you decide if drinking caffeine is a good choice for you. Ready to dabble in the world of decaf? Keep in mind that cutting out caffeine abruptly can have side effects like headaches, fatigue and drowsiness, Brown says. “If you choose to cut back on your caffeine intake, I recommend doing so gradually,” she says. Another tip? If you’re trying to use medication to relieve a headache caused by a lack of caffeine, Brown says to check that it doesn’t contain more caffeine. Should anyone avoid caffeine altogether? It depends. Caffeine isn’t recommended for people who have certain medical conditions or who are taking some medications, Brown says. For example, she recommends that people with the following medical conditions watch their caffeine intake: Gastroesophageal reflux disease (GERD) Heart disease Hepatic impairment Hypersensitivity Iron deficiency anemia Peptic ulcer disease Pregnancy Kidney and/or urinary impairments Seizures Severe anxiety Irregular heartbeats Still unsure whether it's safe for you to consume caffeine? It’s best to consult with your care team. Is caffeine safe for cancer patients? The answer to this question will look different for each person. Here are a few factors Brown says play into whether it’s safe for someone in cancer treatment to consume caffeine. Medication Medical and surgical history Side effects , such as dehydration and diarrhea “It is best to work with your medical team to determine what’s best for you,” she says. How can we make caffeinated beverages healthier? Caffeine can affect your health, but so can other beverage choices. “The largest concerns with coffee intake and health are less directly related to moderate amounts of caffeine consumption, but rather the habits around those beverages,” Brown says. For example, while the amount of caffeine in some specialty coffee or energy drinks may be well within the FDA’s safe daily caffeine recommendations, some can single-handedly account for more added sugar than it is recommended to consume in a day . Likewise, dairy products like milk, cold foam and creamer can be high in trans-fat and saturated fat. If you’re looking for healthier ways to change up the taste of your coffee, here are Brown's suggestions. Flavor it with cinnamon or nutmeg. Use natural sugars like maple syrup or pasteurized honey rather than artificial sweeteners. These options are still added sugar, but it doesn’t take much to sweeten your drink — try starting with a teaspoon or two. This can ultimately help you consume less sugar overall. Not a fan of strong coffee? Rather than add sweetener, try adding skim or low-fat milk or water. “It is OK to add small amounts of items like sugar, creamer or flavorings to your coffee,” Brown says. “However, be mindful to check the ingredient list and monitor overall intake of excess calories and added sugar as this could contribute to excess weight gain.” Request an appointment at MD Anderson online or call 1-877-632-6789 .
Markdown	[Skip to Content](https://www.mdanderson.org/cancerwise/how-much-caffeine-is-too-much.h00-159776445.html#skip) - [MyChart](https://my.mdanderson.org/MyChart/Home/ " Opens a new window") Log in to our secure, personalized website to manage your care (formerly myMDAnderson). - Request an Appointment Request an Appointment If you are ready to make an appointment, select a button on the right. If you have questions about UT MD Anderson’s appointment process, our information page may be the best place to start. [Appointment Information](https://www.mdanderson.org/about-md-anderson/contact-us/askmdanderson/appointments.html) [New Patients](https://my.mdanderson.org/RequestAppointment " Opens a new window") [Current Patients](https://www.mdanderson.org/patients-family/becoming-our-patient/planning-for-care/returning-patients.html) [Referring Physicians](https://my.mdanderson.org/physicianreferral) - [Donate Today](https://gifts.mdanderson.org/Default.aspx?tsid=37435 " Opens a new window") [![The University of Texas MD Anderson Cancer Center](https://www.mdanderson.org/etc.clientlibs/mda/clientlibs/mda-web/clientlib-site/resources/images/xmda-logo.png.pagespeed.ic.N11qaULSMU.png)](https://www.mdanderson.org/) Search Close Menu Close - [Clinical Trials](https://www.mdanderson.org/patients-family/diagnosis-treatment/clinical-trials.html) - [Locations](https://www.mdanderson.org/about-md-anderson/our-locations.html) - [Careers](https://jobs.mdanderson.org/) - [Contact Us](https://www.mdanderson.org/about-md-anderson/contact-us.html) - [Our Doctors](https://faculty.mdanderson.org/) - Languages - [Español](https://www.mdanderson.org/es/why-choose-md-anderson.html " Opens a new window") - [عربى](https://www.mdanderson.org/ar/why-choose-md-anderson.html " Opens a new window") - [中文](https://www.mdanderson.org/zh/why-choose-md-anderson.html " Opens a new window") - [Türkçe](https://www.mdanderson.org/tr/why-choose-md-anderson.html " Opens a new window") [close](https://www.mdanderson.org/cancerwise/how-much-caffeine-is-too-much.h00-159776445.html) [MyChart](https://my.mdanderson.org/MyChart/Home/ " Opens a new window") [Donate Today](https://gifts.mdanderson.org/Default.aspx?tsid=37435 " Opens a new window") - [Clinical Trials](https://www.mdanderson.org/patients-family/diagnosis-treatment/clinical-trials.html) - [Locations](https://www.mdanderson.org/about-md-anderson/our-locations.html) - [Careers](https://jobs.mdanderson.org/) - [Contact Us](https://www.mdanderson.org/about-md-anderson/contact-us.html) - Languages - [Español](https://www.mdanderson.org/es/why-choose-md-anderson.html " Opens a new window") - [عربى](https://www.mdanderson.org/ar/why-choose-md-anderson.html " Opens a new window") - [中文](https://www.mdanderson.org/zh/why-choose-md-anderson.html " Opens a new window") - [Türkçe](https://www.mdanderson.org/tr/why-choose-md-anderson.html " Opens a new window") Request an Appointment - [Request an Appointment](https://www.mdanderson.org/about-md-anderson/contact-us/askmdanderson/appointments.html) - [New Patients](https://my.mdanderson.org/RequestAppointment " Opens a new window") - [Current Patients](https://www.mdanderson.org/patients-family/becoming-our-patient/planning-for-care/returning-patients.html) - [Referring Physicians](https://my.mdanderson.org/physicianreferral) - [Patients & Family](https://www.mdanderson.org/patients-family.html) - Becoming Our Patient - Becoming Our Patient - [Becoming Our Patient Home](https://www.mdanderson.org/patients-family/becoming-our-patient.html) - [Why UT MD Anderson](https://www.mdanderson.org/patients-family/becoming-our-patient/why-md-anderson.html) - [Planning for Care](https://www.mdanderson.org/patients-family/becoming-our-patient/planning-for-care.html) - [Getting to UT MD Anderson](https://www.mdanderson.org/patients-family/becoming-our-patient/getting-to-md-anderson.html) - [While You're Here](https://www.mdanderson.org/patients-family/becoming-our-patient/while-youre-here.html) - [International Center](https://www.mdanderson.org/patients-family/becoming-our-patient/international-center.html) - [Services and Amenities](https://www.mdanderson.org/patients-family/becoming-our-patient/services-amenities.html) - [Insurance & Billing](https://www.mdanderson.org/patients-family/becoming-our-patient/insurance-billing.html) - [Second Opinion Appointments](https://www.mdanderson.org/patients-family/becoming-our-patient/second-opinion-appointments.html) - Diagnosis & Treatment - Diagnosis & Treatment - [Diagnosis & Treatment Home](https://www.mdanderson.org/patients-family/diagnosis-treatment.html) - [Cancer Types](https://www.mdanderson.org/patients-family/diagnosis-treatment/cancer-types.html) - [A New Diagnosis](https://www.mdanderson.org/patients-family/diagnosis-treatment/a-new-diagnosis.html) - [Treatment Options](https://www.mdanderson.org/patients-family/diagnosis-treatment/treatment-options.html) - [Care Centers & Clinics](https://www.mdanderson.org/patients-family/diagnosis-treatment/care-centers-clinics.html) - [Emotional & Physical Effects](https://www.mdanderson.org/patients-family/diagnosis-treatment/emotional-physical-effects.html) - [Patient Support](https://www.mdanderson.org/patients-family/diagnosis-treatment/patient-support.html) - [Clinical Trials](https://www.mdanderson.org/patients-family/diagnosis-treatment/clinical-trials.html) - Supporting a Loved One - Supporting a Loved One - [Supporting a Loved One Home](https://www.mdanderson.org/patients-family/supporting-a-loved-one.html) - [Caregiver Roles & Challenges](https://www.mdanderson.org/patients-family/supporting-a-loved-one/caregiver-roles-challenges.html) - [Children and Teens](https://www.mdanderson.org/patients-family/supporting-a-loved-one/supporting-children-teens.html) - [Taking Care of Yourself](https://www.mdanderson.org/patients-family/supporting-a-loved-one/taking-care-of-yourself.html) - [Helping a UT MD Anderson Patient](https://www.mdanderson.org/patients-family/supporting-a-loved-one/Helping-mdanderson-patient.html) - [Dealing with Loss](https://www.mdanderson.org/patients-family/supporting-a-loved-one/dealing-with-loss.html) - Life After Cancer - Life After Cancer - [Life After Cancer Home](https://www.mdanderson.org/patients-family/life-after-cancer.html) - [Follow-up Care After Cancer Treatment](https://www.mdanderson.org/patients-family/life-after-cancer/followup-care-after-cancer-treatment.html) - [Long-Term Effects of Cancer](https://www.mdanderson.org/patients-family/life-after-cancer/long-term-effects.html) - [Social & Emotional Impacts of Cancer](https://www.mdanderson.org/patients-family/life-after-cancer/social-emotional-impacts.html) - [Legal & Financial Impacts of Cancer](https://www.mdanderson.org/patients-family/life-after-cancer/legal-financial-impacts.html) - [Survivorship Week](https://www.mdanderson.org/patients-family/life-after-cancer/survivorship-week.html) - [Request an Appointment](https://www.mdanderson.org/about-md-anderson/contact-us/askmdanderson/appointments.html) [Current Patients Find information and resources for current and returning patients.](https://www.mdanderson.org/patients-family/becoming-our-patient/planning-for-care/returning-patients.html) [Clinical Trials Learn about clinical trials at UT MD Anderson and search our database for open studies.](https://www.mdanderson.org/patients-family/diagnosis-treatment/clinical-trials.html) - [Prevention & Screening](https://www.mdanderson.org/prevention-screening.html) - Manage Your Risk - Manage Your Risk - [Manage Your Risk Home](https://www.mdanderson.org/prevention-screening/manage-your-risk.html) - [Tobacco Control](https://www.mdanderson.org/prevention-screening/manage-your-risk/tobacco-control-at-md-anderson.html) - [Diet](https://www.mdanderson.org/prevention-screening/manage-your-risk/diet.html) - [Body Weight](https://www.mdanderson.org/prevention-screening/manage-your-risk/body-weight.html) - [Physical Activity](https://www.mdanderson.org/prevention-screening/manage-your-risk/physical-activity.html) - [Skin Safety](https://www.mdanderson.org/prevention-screening/manage-your-risk/skin-safety.html) - [HPV](https://www.mdanderson.org/prevention-screening/manage-your-risk/hpv.html) - [Hepatitis](https://www.mdanderson.org/prevention-screening/manage-your-risk/hepatitis.html) - [Alcohol](https://www.mdanderson.org/prevention-screening/manage-your-risk/alcohol.html) - Family History - Family History - [Family History Home](https://www.mdanderson.org/prevention-screening/family-history.html) - [Genetic Testing](https://www.mdanderson.org/prevention-screening/family-history/genetic-testing.html) - [Hereditary Cancer Syndromes](https://www.mdanderson.org/prevention-screening/family-history/hereditary-cancer-syndromes.html) - [Genetic Counseling and Testing FAQs](https://www.mdanderson.org/prevention-screening/family-history/faqs.html) - Cancer Screenings - Cancer Screenings - [Cancer Screenings Home](https://www.mdanderson.org/prevention-screening/get-screened.html) - [Mammograms & Breast Cancer Screening](https://www.mdanderson.org/prevention-screening/get-screened/breast-cancer-screening.html) - [Cervical Cancer Screening](https://www.mdanderson.org/prevention-screening/get-screened/cervical-cancer-screening.html) - [Colorectal Cancer Screening](https://www.mdanderson.org/prevention-screening/get-screened/colorectal-cancer-screening.html) - [Endometrial Cancer Screening](https://www.mdanderson.org/prevention-screening/get-screened/endometrial-cancer-screening.html) - [Liver Cancer Screening](https://www.mdanderson.org/prevention-screening/get-screened/liver-cancer-screening.html) - [Lung Cancer Screening](https://www.mdanderson.org/prevention-screening/get-screened/lung-cancer-screening.html) - [Mobile Mammography](https://www.mdanderson.org/prevention-screening/get-screened/mobile-mammography.html) - [Ovarian Cancer Screening](https://www.mdanderson.org/prevention-screening/get-screened/ovarian-cancer-screening.html) - [Prostate Cancer Screening](https://www.mdanderson.org/prevention-screening/get-screened/prostate-cancer-screening.html) - [Skin Cancer Screening](https://www.mdanderson.org/prevention-screening/get-screened/skin-cancer-screening.html) - [Women's Cancer Screening](https://www.mdanderson.org/prevention-screening/get-screened/women-screening-exams.html) - [Men's Cancer Screening](https://www.mdanderson.org/prevention-screening/get-screened/men-screening-exams.html) - [![](https://www.mdanderson.org/content/dam/mdanderson/images/publications/focused-on-health/2015/xWEB-Tanya-Moseley-3D-mammo.jpg.resize.jpg.pagespeed.ic.uCtB516AKn.jpg) Cancer Prevention Center The Lyda Hill Cancer Prevention Center provides cancer risk assessment, screening and diagnostic services.](https://www.mdanderson.org/patients-family/diagnosis-treatment/care-centers-clinics/cancer-prevention-center.html) - [Donors & Volunteers](https://www.mdanderson.org/donors-volunteers.html) - Donate - Donate - [Donate Home](https://www.mdanderson.org/donors-volunteers/donate.html) - [Raise Money](https://www.mdanderson.org/donors-volunteers/donate/raise-money.html) - [Honor Loved Ones](https://www.mdanderson.org/donors-volunteers/donate/honor-loved-ones.html) - [Create Your Legacy](https://www.mdanderson.org/donors-volunteers/donate/planned-giving.html) - [Endowments](https://www.mdanderson.org/donors-volunteers/donate/endowments.html) - [Caring Fund](https://www.mdanderson.org/donors-volunteers/donate/md-anderson-caring-fund.html) - [Matching Gifts](https://www.mdanderson.org/donors-volunteers/donate/matching-gifts.html) - [Foundation and Corporation Relations](https://www.mdanderson.org/donors-volunteers/donate/foundation-and-corporation-relations.html) - Volunteer - Volunteer - [Volunteer Home](https://www.mdanderson.org/donors-volunteers/volunteer.html) - [On-Site Volunteers](https://www.mdanderson.org/donors-volunteers/volunteer/on-site-volunteers.html) - [Volunteer Endowment](https://www.mdanderson.org/donors-volunteers/volunteer/endowments.html) - [Patient Experience](https://www.mdanderson.org/donors-volunteers/volunteer/patient-experience.html) - [Children's Cancer Hospital Councils](https://www.mdanderson.org/donors-volunteers/volunteer/childrens-cancer-hospital-councils.html) - Other Ways to Help - Other Ways to Help - [Other Ways to Help Home](https://www.mdanderson.org/donors-volunteers/other-ways-to-help.html) - [Give Blood](https://www.mdanderson.org/donors-volunteers/other-ways-to-help/give-blood.html) - [Shop UT MD Anderson](https://www.mdanderson.org/donors-volunteers/other-ways-to-help/shop-md-anderson.html) - [Donate Goods or Services](https://www.mdanderson.org/donors-volunteers/other-ways-to-help/donate-goods-or-services.html) - [Attend Events](https://www.mdanderson.org/donors-volunteers/other-ways-to-help/attend-events.html) - [Cord Blood Bank](https://www.mdanderson.org/donors-volunteers/other-ways-to-help/cord-blood-bank.html) - Corporate Alliances - Corporate Alliances - [Corporate Alliances Home](https://www.mdanderson.org/donors-volunteers/corporate-alliances.html) - [Current Alliances](https://www.mdanderson.org/donors-volunteers/corporate-alliances/current-alliances.html) - [![](https://www.mdanderson.org/content/dam/mdanderson/images/hero-images/Integrated%20Media/xoph-web-promo-image-tagline.png.resize.jpg.pagespeed.ic.twSaqq5_GV.jpg) Join the Campaign to End Cancer Help us celebrate and fuel the groundbreaking innovations and transformative advancements that define UT MD Anderson.](https://onlypossiblehere.mdanderson.org/) - [For Physicians](https://www.mdanderson.org/for-physicians.html) - Refer a Patient - Refer a Patient - [Refer a Patient Home](https://www.mdanderson.org/for-physicians/refer-a-patient.html) - [Health Care Provider Resource Center](https://www.mdanderson.org/for-physicians/refer-a-patient/health-care-provider-resource-center.html) - [Referring Provider Team](https://www.mdanderson.org/for-physicians/refer-a-patient/referring-provider-team.html) - [Insurance Information](https://www.mdanderson.org/for-physicians/refer-a-patient/insurance-information.html) - [International Referrals](https://www.mdanderson.org/for-physicians/refer-a-patient/international-referrals.html) - [myMDAnderson for Physicians](https://www.mdanderson.org/for-physicians/refer-a-patient/mymdanderson-for-physicians.html) - [Second Opinion Pathology](https://www.mdanderson.org/for-physicians/refer-a-patient/second-opinion-pathology.html) - Clinical Trials - Clinical Trials - [Clinical Trials Home](https://www.mdanderson.org/for-physicians/clinical-trials.html) - Clinical Tools & Resources - Clinical Tools & Resources - [Clinical Tools & Resources Home](https://www.mdanderson.org/for-physicians/clinical-tools-resources.html) - [Clinical Calculators](https://www.mdanderson.org/for-physicians/clinical-tools-resources/clinical-calculators.html) - [Clinical Practice Algorithms](https://www.mdanderson.org/for-physicians/clinical-tools-resources/clinical-practice-algorithms.html) - [![](https://www.mdanderson.org/content/dam/mdanderson/images/l2-l3-hero/xsujit_prabhu_physicians_nav.jpg.resize.jpg.pagespeed.ic.8yuRzUyAsr.jpg) myMDAnderson for Physicians Our personalized portal helps you refer your patients and communicate with their UT MD Anderson care team.](https://www.mdanderson.org/for-physicians/refer-a-patient/mymdanderson-for-physicians.html) - [Research](https://www.mdanderson.org/research.html) - Departments, Labs and Institutes - Departments, Labs and Institutes - [Departments, Labs and Institutes Home](https://www.mdanderson.org/research/departments-labs-institutes.html) - [Departments and Divisions](https://www.mdanderson.org/research/departments-labs-institutes/departments-divisions.html) - [Labs](https://www.mdanderson.org/research/departments-labs-institutes/labs.html) - [Research Centers and Programs](https://www.mdanderson.org/research/departments-labs-institutes/programs-centers.html) - [Institutes](https://www.mdanderson.org/research/departments-labs-institutes/institutes.html) - [Specialized Programs of Research Excellence (SPORE) Grants](https://www.mdanderson.org/research/departments-labs-institutes/spores.html) - Research Areas - Research Areas - [Research Areas Home](https://www.mdanderson.org/research/research-areas.html) - [Basic Science](https://www.mdanderson.org/research/research-areas/basic-science.html) - [Translational Research](https://www.mdanderson.org/research/research-areas/translational-research.html) - [Clinical Research](https://www.mdanderson.org/research/research-areas/clinical-research.html) - [Prevention & Personalized Risk Assessment](https://www.mdanderson.org/research/research-areas/prevention-personalized-risk-assessment.html) - Research Resources - Research Resources - [Research Resources Home](https://www.mdanderson.org/research/research-resources.html) - [Excellence in Science](https://www.mdanderson.org/research/research-resources/excellence-in-science.html) - [Core Facilities and Services](https://www.mdanderson.org/research/research-resources/core-facilities.html) - [Conferences & Seminars](https://www.mdanderson.org/research/research-resources/conferences-seminars.html) - [Why Research at UT MD Anderson](https://www.mdanderson.org/research/research-resources/why-research.html) - [STRIDE](https://www.mdanderson.org/research/research-resources/stride.html) - [NCI-Designated Cancer Center](https://www.mdanderson.org/research/research-resources/nci-designated-cancer-center.html) - [![](https://www.mdanderson.org/content/dam/mdanderson/images/moonshots/researchplatforms/Clinical-Trial/xCLL_Jan_Burger_175_resized.jpg.resize.jpg.pagespeed.ic.M81owwTRNc.jpg) Clinical Trials As part of our mission to eliminate cancer, UT MD Anderson researchers conduct hundreds of clinical trials to test new treatments for both common and rare cancers.](https://www.mdanderson.org/patients-family/diagnosis-treatment/clinical-trials.html) - [Education & Training](https://www.mdanderson.org/education-training.html) - Degree-Granting Schools - Degree-Granting Schools - [Degree-Granting Schools Home](https://www.mdanderson.org/education-training/degree-granting-schools.html) - [School of Health Professions](https://www.mdanderson.org/education-training/degree-granting-schools/school-of-health-professions.html) - [MD Anderson UTHealth Houston Graduate School](https://www.mdanderson.org/education-training/degree-granting-schools/graduate-school-of-biomedical-sciences.html) Education Resources - Education Resources - [Education Resources Home](https://www.mdanderson.org/education-training/education-resources.html) - [Alumni Relations](https://www.mdanderson.org/education-training/education-resources/alumni-relations.html) - [Education Design Services](https://www.mdanderson.org/education-training/education-resources/education-design-services.html) - [Awards & Recognitions](https://www.mdanderson.org/education-training/education-resources/awards-recognitions.html) - [Academic Mentoring Council](https://www.mdanderson.org/education-training/education-resources/academic-mentoring-council.html) - [Why UT MD Anderson & Houston](https://www.mdanderson.org/education-training/education-resources/why-train-at-md-anderson-houston.html) - Research Training - Research Training - [Research Training Home](https://www.mdanderson.org/education-training/research-training.html) - [Early Career Pathway Programs](https://www.mdanderson.org/education-training/research-training/early-career-pathway-programs.html) - [Predoctoral Training](https://www.mdanderson.org/education-training/research-training/predoctoral-training.html) - [Postdoctoral Training](https://www.mdanderson.org/education-training/research-training/postdoctoral-training.html) - [Mentored Faculty Programs](https://www.mdanderson.org/education-training/research-training/mentored-faculty-programs.html) - [Career Development](https://www.mdanderson.org/education-training/research-training/career-development.html) - Clinical Training - Clinical Training - [Clinical Training Home](https://www.mdanderson.org/education-training/clinical-training.html) - [Graduate Medical Education](https://www.mdanderson.org/education-training/clinical-training/graduate-medical-education.html) - [Clinical Education for Non-Physicians](https://www.mdanderson.org/education-training/clinical-training/clinical-education-for-non-physicians.html) - [Nursing Education & Training](https://www.mdanderson.org/education-training/clinical-training/nursing-education.html) - [Continuing Education & Review Courses](https://www.mdanderson.org/education-training/clinical-training/certificate-programs-review-courses.html) - [Simulation Center](https://www.mdanderson.org/education-training/clinical-training/simulation-center.html) - Continuing Education & Professional Development - Continuing Education & Professional Development - [Continuing Education & Professional Development Home](https://www.mdanderson.org/education-training/continuing-education-professional-development.html) - [Continuing Professional Education/Conferences](https://www.mdanderson.org/education-training/continuing-education-professional-development/continuing-professional-education-conferences.html) - [Administrative Internships & Fellowships](https://www.mdanderson.org/education-training/continuing-education-professional-development/administrative-internships-fellowships.html) - [Cancer Survivorship Professional Education](https://www.mdanderson.org/education-training/continuing-education-professional-development/cancer-survivorship-program.html) - [Leadership Institute](https://www.mdanderson.org/education-training/continuing-education-professional-development/leadership-institute.html) - [Patient Home Visits](https://www.mdanderson.org/education-training/continuing-education-professional-development/patient-home-visits.html) - Outreach Programs - Outreach Programs - [Outreach Programs Home](https://www.mdanderson.org/education-training/outreach-programs.html) - [Project ECHO](https://www.mdanderson.org/education-training/outreach-programs/project-echo.html) - [Observer Programs](https://www.mdanderson.org/education-training/outreach-programs/observer-programs.html) - [Comparative Effectiveness Training (CERTaIN)](https://www.mdanderson.org/education-training/outreach-programs/comparative-effectiveness-research-training.html) - [Faculty Speakers Bureau](https://www.mdanderson.org/education-training/outreach-programs/faculty-speakers-bureau.html) - [Apply to SHP Choose from 12 allied health programs at School of Health Professions.](https://www.mdanderson.org/education-training/degree-granting-schools/school-of-health-professions/prospective-students.html) [Research Trainees View open postdoctoral and other research trainee positions.](https://www.mdanderson.org/education-training/research-training.html) [GME Fellowships Learn about our graduate medical education residency and fellowship opportunities.](https://www.mdanderson.org/education-training/clinical-training/graduate-medical-education/residencies-fellowships.html) - [Cancerwise Blog](https://www.mdanderson.org/cancerwise.html) - [2025](https://www.mdanderson.org/cancerwise/2025.html) - [05](https://www.mdanderson.org/cancerwise/2025/05.html) - How much caffeine is too much? [Top](https://www.mdanderson.org/cancerwise/how-much-caffeine-is-too-much.h00-159776445.html) Jump To: [Back](https://www.mdanderson.org/cancerwise.html) - [Diseases](https://www.mdanderson.org/cancerwise.dir.html) - [Acoustic Neuroma (18)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/diseases/acoustic-neuroma) - [Adrenal Gland Tumor (18)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/diseases/adrenal-gland-tumor) - [Anal Cancer (68)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/diseases/anal-cancer) - [Anemia (2)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/diseases/anemia) - [Appendix Cancer (18)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/diseases/appendix-cancer) - [Bile Duct Cancer (24)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/diseases/bile-duct-cancer) - [Bladder Cancer (68)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/diseases/bladder-cancer) - [Brain Metastases (24)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/diseases/brain-metastases) - [Brain Tumor (234)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/diseases/brain-tumor) - [Breast Cancer (690)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/diseases/breast-cancer) - [Breast Implant-Associated Anaplastic Large Cell Lymphoma (2)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/diseases/breast-implant-associated-anaplastic-large-cell-lymphoma) - [Cancer of Unknown Primary (4)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/diseases/cancer-of-unknown-primary) - [Carcinoid Tumor (8)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/diseases/carcinoid-tumor) - [Cervical Cancer (146)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/diseases/cervical-cancer) - [Colon Cancer (160)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/diseases/colon-cancer) - [Colorectal Cancer (134)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/diseases/colorectal-cancer) - [Endocrine Tumor (4)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/diseases/endocrine-tumor) - [Endometrial Cancer (78)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/diseases/uterine-cancer) - [Esophageal Cancer (42)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/diseases/esophageal-cancer) - [Eye Cancer (36)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/diseases/eye-cancer) - [Fallopian Tube Cancer (8)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/diseases/fallopian-tube-cancer) - [Germ Cell Tumor (2)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/diseases/germ-cell-tumor) - [Gestational Trophoblastic Disease (2)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/diseases/gestational-trophoblastic-disease) - [Head and Neck Cancer (22)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/diseases/head-and-neck-cancer) - [Kidney Cancer (126)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/diseases/kidney-cancer) - [Leukemia (322)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/diseases/leukemia) - [Liver Cancer (54)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/diseases/liver-cancer) - [Lung Cancer (242)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/diseases/lung-cancer) - [Lymphoma (282)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/diseases/lymphoma) - [Mesothelioma (14)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/diseases/mesothelioma) - [Metastasis (30)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/diseases/metastasis) - [Multiple Myeloma (98)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/diseases/multiple-myeloma) - [Myelodysplastic Syndrome (58)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/diseases/myelodysplastic-syndrome) - [Myeloproliferative Neoplasm (6)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/diseases/myeloproliferative-disorder) - [Neuroendocrine Tumors (16)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/diseases/neuroendocrine-tumors) - [Oral Cancer (98)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/diseases/oral-cancer) - [Ovarian Cancer (156)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/diseases/ovarian-cancer) - [Pancreatic Cancer (124)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/diseases/pancreatic) - [Parathyroid Disease (2)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/diseases/parathyroid-disease) - [Penile Cancer (8)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/diseases/penile-cancer) - [Pituitary Tumor (6)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/diseases/pituitary-tumor) - [Prostate Cancer (150)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/diseases/prostate-cancer) - [Rectal Cancer (58)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/diseases/rectal-cancer) - [Renal Medullary Carcinoma (6)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/diseases/renal-medullary-carcinoma) - [Salivary Gland Cancer (16)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/diseases/salivary-gland-cancer) - [Sarcoma (240)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/diseases/sarcoma) - [Skin Cancer (288)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/diseases/skin-cancer) - [Skull Base Tumors (60)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/diseases/skull-base-tumors) - [Spinal Tumor (14)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/diseases/spinal-tumor) - [Stomach Cancer (60)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/diseases/stomach-cancer) - [Testicular Cancer (30)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/diseases/testicular-cancer) - [Throat Cancer (86)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/diseases/throat-cancer) - [Thymoma (6)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/diseases/thymoma) - [Thyroid Cancer (94)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/diseases/thyroid-cancer) - [Tonsil Cancer (30)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/diseases/tonsil-cancer) - [Vaginal Cancer (16)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/diseases/vaginal-cancer) - [Vulvar Cancer (22)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/diseases/vulvar-cancer) - [Cancer Topic](https://www.mdanderson.org/cancerwise.dir.html) - [Adolescent and Young Adult Cancer Issues (34)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/cancer-topics/adolescent-and-young-adult-cancer-issues) - [Advance Care Planning (16)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/cancer-topics/advance-care-planning-advanced-directives) - [Blood Donation (22)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/cancer-topics/blood-donation) - [Bone Health (10)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/cancer-topics/bone-health) - [COVID-19 (360)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/cancer-topics/covid-19) - [Cancer Recurrence (122)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/cancer-topics/cancer-recurrence) - [Childhood Cancer Issues (114)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/cancer-topics/childhood-cancer-issues) - [Clinical Trials (594)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/cancer-topics/clinical-trials) - [Complementary Integrative Medicine (20)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/cancer-topics/complementary-integrative-medicine) - [Cytogenetics (2)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/cancer-topics/cytogenetics) - [DNA Methylation (2)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/cancer-topics/dna-methylation) - [Diagnosis (242)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/cancer-topics/diagnosis) - [Epigenetics (4)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/cancer-topics/epigenetics) - [Fertility (66)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/cancer-topics/fertility) - [Follow-up Guidelines (2)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/cancer-topics/follow-up-guidelines) - [Health Disparities (12)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/cancer-topics/health-disparities) - [Hereditary Cancer Syndromes (124)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/cancer-topics/hereditary-cancer-syndromes) - [Immunology (12)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/cancer-topics/immunology) - [Li-Fraumeni Syndrome (6)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/cancer-topics/li-fraumeni-syndrome) - [Mental Health (130)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/cancer-topics/mental-health) - [Molecular Diagnostics (8)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/cancer-topics/molecular-diagnostics) - [Pain Management (60)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/cancer-topics/pain-management) - [Palliative Care (6)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/cancer-topics/palliative-care) - [Pathology (10)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/cancer-topics/pathology) - [Physical Therapy (18)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/cancer-topics/physical-therapy) - [Pregnancy (18)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/cancer-topics/pregnancy) - [Prevention (1002)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/cancer-topics/prevention) - [Research (248)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/cancer-topics/research) - [Second Opinion (86)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/cancer-topics/second-opinion) - [Sexuality (18)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/cancer-topics/sexuality) - [Side Effects (650)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/cancer-topics/side-effects) - [Sleep Disorders (12)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/cancer-topics/sleep-disorders) - [Stem Cell Transplantation Cellular Therapy (206)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/cancer-topics/stem-cell-transplantation-cellular-therapy) - [Support (420)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/cancer-topics/support) - [Survivorship (330)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/cancer-topics/survivorship) - [Symptoms (186)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/cancer-topics/symptoms) - [Treatment (1728)](https://www.mdanderson.org/cancerwise.dir.html/category/content/cq:tags/md-anderson/cancer-topics/treatment) # How much caffeine is too much? BY [Gina Van Thomme](https://www.mdanderson.org/cancerwise.dir.html/author/Gina%20Van%20Thomme) \\| Close Share this article Via social media: Or copy the link: Copy to clipboard Copy 5 minute read \\| Published May 09, 2025 Medically Reviewed \\| Last reviewed by Kaylie Brown on May 09, 2025 Caffeine does more than just provide a boost of energy. For many, it’s a daily ritual. A morning cup of coffee can make leaving a warm bed slightly more bearable. A shot of espresso can perk you up during that afternoon slump. Maybe you even rely on the occasional energy drink to fuel a late-night study session. But you might wonder how it impacts your health. How much is too much? And is there anything we can do to make our caffeinated drinks healthier? Clinical dietitian Kaylie Brown helps answer these questions and more. ## How does caffeine work? You likely already know how the right amount of caffeine makes you feel: fueled and ready to take on the day. But how else does caffeine affect the body? The National Institutes of Health’s [National Library of Medicine](https://medlineplus.gov/caffeine.html) writes that caffeine can: - Stimulate the central nervous system - Act as a diuretic, increasing urination - Cause your body to release more stomach acid - Possibly impact calcium absorption - Raise blood pressure ## How much caffeine is too much? Most adults can consume about 400 milligrams of caffeine per day without negative effects, the [Food and Drug Administration](https://www.fda.gov/consumers/consumer-updates/spilling-beans-how-much-caffeine-too-much) (FDA) writes. “A typical dose of caffeine is around 70 to 100 milligrams per drink,” Brown says. But many caffeinated beverages, like the pot of coffee in your office or a to-go latte, don’t come with ingredient labels that say exactly how much caffeine they contain. Resources like the [National Library of Medicine](https://medlineplus.gov/caffeine.html) provide general caffeine ranges for popular beverages. This can help you get a better idea of how much caffeine you are consuming. - Coffee (8 ounces): 95-200 milligrams - Energy drink (8 ounces): 70-100 milligrams - Cola (12 ounces): 35-45 milligrams - Tea (8 ounces): 14-60 milligrams ## What factors impact caffeine tolerance? While general caffeine recommendations can give you a sense of how much caffeine is safe to consume, caffeine intake varies from person to person. That means your caffeine intake might look different from that of a friend who can drink coffee late into the afternoon and still manage to fall asleep without issue. Brown says caffeine tolerance can vary based on factors such as: - How much caffeine you drink - How quickly you drink it - How long it takes your body to eliminate the caffeine - Body composition - Caffeine sensitivity - Medications - Health conditions ## What happens when you have too much caffeine? Your body can provide you with some helpful signs that you’ve over-caffeinated. Brown notes that symptoms of drinking too much caffeine include: - Increased heart rate - Heart palpitations - High blood pressure - Insomnia - Sleep disturbances - Anxiety - Jitters - Gastrointestinal upset - Nausea - Headaches - Seizures ## Is decaf better than a caffeinated drink? Much like your unique coffee order, this answer might look different from one person to the next. “I think that making these decisions depends on intake, overall health goals, and tolerance and side effects,” Brown says. A registered dietitian or doctor can help you decide if drinking caffeine is a good choice for you. Ready to dabble in the world of decaf? Keep in mind that cutting out caffeine abruptly can have side effects like headaches, fatigue and drowsiness, Brown says. “If you choose to cut back on your caffeine intake, I recommend doing so gradually,” she says. Another tip? If you’re trying to use medication to relieve a headache caused by a lack of caffeine, Brown says to check that it doesn’t contain more caffeine. ## Should anyone avoid caffeine altogether? It depends. Caffeine isn’t recommended for people who have certain medical conditions or who are taking some medications, Brown says. For example, she recommends that people with the following medical conditions watch their caffeine intake: - Gastroesophageal reflux disease (GERD) - Heart disease - Hepatic impairment - Hypersensitivity - Iron deficiency anemia - Peptic ulcer disease - Pregnancy - Kidney and/or urinary impairments - Seizures - Severe anxiety - Irregular heartbeats Still unsure whether it's safe for you to consume caffeine? It’s best to consult with your care team. ## Is caffeine safe for cancer patients? The answer to this question will look different for each person. Here are a few factors Brown says play into whether it’s safe for someone in [cancer treatment](https://www.mdanderson.org/treatment-options.html) to consume caffeine. - Medication - Medical and surgical history - [Side effects](https://www.mdanderson.org/patients-family/diagnosis-treatment/emotional-physical-effects.html), such as [dehydration](https://www.mdanderson.org/patients-family/diagnosis-treatment/emotional-physical-effects/dehydration.html) and [diarrhea](https://www.mdanderson.org/patients-family/diagnosis-treatment/emotional-physical-effects/bowel-management.html) “It is best to work with your medical team to determine what’s best for you,” she says. ## How can we make caffeinated beverages healthier? Caffeine can affect your health, but so can other beverage choices. “The largest concerns with coffee intake and health are less directly related to moderate amounts of caffeine consumption, but rather the habits around those beverages,” Brown says. For example, while the amount of caffeine in some specialty coffee or energy drinks may be well within the FDA’s safe daily caffeine recommendations, some can single-handedly account for more added sugar than it is [recommended to consume in a day](https://www.mdanderson.org/cancerwise/how-many-grams-of-added-sugar-should-you-have-per-day.h00-159623379.html#:~:text=MD%20Anderson%20follows%20the%20American,rich%20in%20healthy%2C%20nutritious%20foods.). Likewise, dairy products like milk, cold foam and creamer can be high in trans-fat and saturated fat. If you’re looking for healthier ways to change up the taste of your coffee, here are Brown's suggestions. - Flavor it with cinnamon or nutmeg. - Use natural sugars like maple syrup or pasteurized honey rather than artificial sweeteners. These options are still added sugar, but it doesn’t take much to sweeten your drink — try starting with a teaspoon or two. This can ultimately help you consume less sugar overall. - Not a fan of strong coffee? Rather than add sweetener, try adding skim or low-fat milk or water. “It is OK to add small amounts of items like sugar, creamer or flavorings to your coffee,” Brown says. “However, be mindful to check the ingredient list and monitor overall intake of excess calories and added sugar as this could contribute to excess weight gain.” [Request an appointment at MD Anderson online](https://my.mdanderson.org/RequestAppointment) or call 1-877-632-6789. ## Related Cancerwise Stories [![entity1](https://www.mdanderson.org/images/publications/cancerwise/Generics/cw-water-intake.jpg) How much water should you drink a day?](https://www.mdanderson.org/cancerwise/how-much-water-should-you-drink-a-day.h00-159778812.html) * [![entity2](https://www.mdanderson.org/images/publications/cancerwise/Generics/cw-royal-jelly.jpg) What is royal jelly?](https://www.mdanderson.org/cancerwise/what-is-royal-jelly.h00-159773289.html) * [![entity3](https://www.mdanderson.org/images/publications/cancerwise/Generics/cw-woman-drinking-sports-beverage.jpg) Electrolytes 101: What to know](https://www.mdanderson.org/cancerwise/electrolyte-101-what-to-know.h00-159699912.html) * [![entity4](https://www.mdanderson.org/images/publications/cancerwise/Generics/cw-protein-needs.jpg) How much protein do I need? A dietitian answers](https://www.mdanderson.org/cancerwise/how-much-protein-do-i-need-a-dietitian-answers.h00-159781179.html) * [![entity5](https://www.mdanderson.org/images/publications/cancerwise/Generics/cw-how-much-sleep.jpg) How much sleep do I need?](https://www.mdanderson.org/cancerwise/how-much-sleep-do-i-need.h00-159780390.html) ![A person in an orange shirt pours coffee from a silver moka pot into a white mug.](https://www.mdanderson.org/content/mda/en/cancerwise/2025/05/how-much-caffeine-is-too-much/jcr:content/blog/adaptiveimage.resize.278.0.medium.jpg/1743456737120.jpg) A typical dose of caffeine is around 70 to 100 milligrams per drink. Kaylie Brown Clinical Dietitian [Share Your Story](https://www4.mdanderson.org/cancer_survivors/Story.cfc?method=index) [Request an Appointment](https://www.mdanderson.org/about-md-anderson/contact-us/askmdanderson/appointments.html) [Reduce Your Cancer Risk](https://www.mdanderson.org/prevention-screening/manage-your-risk.html) ### Subscribe to Focused on Health ## Help \#EndCancer ### Give Now Your gift will help make a tremendous difference. [Donate](https://gifts.mdanderson.org/Default.aspx?tsid=37435 " Opens a new window") ### Donate Blood Our patients depend on blood and platelet donations. [Make an appointment](https://www.mdandersonbloodbank.org/ " Opens a new window") ### Shop UT MD Anderson Show your support for our mission through branded merchandise. [View products](https://shop.mdanderson.org/ " Opens a new window") Subscribe to our Cancerwise newsletter [![UT MD Anderson logo](https://www.mdanderson.org/content/mda/en/jcr:content/footer/desktoplogo.resize.png)![UT MD Anderson logo](https://www.mdanderson.org/content/mda/en/jcr:content/footer/xmobilelogo.resize.png.pagespeed.ic.j92o1m7p2y.png)](https://www.mdanderson.org/) - Explore - [Patients & Family](https://www.mdanderson.org/patients-family.html) - [Prevention & Screening](https://www.mdanderson.org/prevention-screening.html) - [Donors & Volunteers](https://www.mdanderson.org/donors-volunteers.html) - [For Physicians](https://www.mdanderson.org/for-physicians.html) - [Research](https://www.mdanderson.org/research.html) - [Education & Training](https://www.mdanderson.org/education-training.html) - [Clinical Trials](https://www.mdanderson.org/patients-family/diagnosis-treatment/clinical-trials.html) - [Languages](https://www.mdanderson.org/about-md-anderson/contact-us/languages.html) - About - [About UT MD Anderson](https://www.mdanderson.org/about-md-anderson.html) - [Careers](https://jobs.mdanderson.org/) - [Blog](https://www.mdanderson.org/cancerwise.html) - [Newsroom](https://www.mdanderson.org/newsroom.html) - [For Employees](https://www.mdanderson.org/about-md-anderson/employee-resources.html) - [Merchandise](https://shop.mdanderson.org/) - [Title IX Reporting (Sexual Misconduct)](https://www.mdanderson.org/about-md-anderson/business-legal/legal-and-policy/legal-statements/title-ix.html) - [Price Transparency](https://www.mdanderson.org/patients-family/becoming-our-patient/planning-for-care/insurance-billing-financial-support/health-care-disclosures.html) - Finding Your Way - [Our Doctors](https://faculty.mdanderson.org/) - [Locations](https://www.mdanderson.org/about-md-anderson/our-locations.html) - [Directions](https://www.mdanderson.org/patients-family/becoming-our-patient/getting-to-md-anderson/wayfinding.html) - [Sitemap](https://www.mdanderson.org/patients-family/html-sitemap.html) - DIGITAL ACCESSIBILITY - [Accessibility Policy](https://www.mdanderson.org/about-md-anderson/business-legal/legal-and-policy/legal-statements/privacy-policy/accessibility-policy.html) [![MD Anderson works with Level Access to ensure our website is accessible and functional for all users. Free assistive technology is provided for people with physical disabilities. To learn more or to download the assistive technology tool, visit https://www.levelaccess.com/MDAnderson](https://www.mdanderson.org/etc.clientlibs/mda/clientlibs/mda-web/clientlib-site/resources/images/eA_Icon_Black.svg)](https://www.levelaccess.com/MDAnderson) - GET IN TOUCH - [Call 1-877-632-6789](tel:18776326789) - [Ask a question](https://www.mdanderson.org/about-md-anderson/contact-us/askmdanderson/ask-a-question.html) - Stay Connected - Previous Next - Cancerwise Podcast - Previous Next - More - [Website Privacy Policy](https://www.mdanderson.org/about-md-anderson/business-legal/legal-and-policy/legal-statements/privacy-policy.html) - [Legal Statement & Policies](https://www.mdanderson.org/about-md-anderson/business-legal/legal-and-policy/legal-statements.html) - [Reports to the State](https://www.mdanderson.org/about-md-anderson/facts-history/u-t-system-reports.html) - [Emergency Alert Information](https://www3.mdanderson.org/emergencyalert/) - [State of Texas Links](https://www.mdanderson.org/about-md-anderson/state-of-texas-links.html) - [MD Anderson Cancer Network®](https://www.mdanderson.org/about-md-anderson/our-locations/md-anderson-cancer-network.html) - [Vendors & Suppliers](https://www.mdanderson.org/about-md-anderson/business-legal/doing-business/vendors-and-suppliers.html) [![UT MD Anderson logo](https://www.mdanderson.org/content/mda/en/jcr:content/footer/xmobilelogo.resize.png.pagespeed.ic.j92o1m7p2y.png)](https://www.mdanderson.org/) The mission of The University of Texas MD Anderson Cancer Center is to eliminate cancer in Texas, the nation, and the world through outstanding programs that integrate patient care, research and prevention, and through education for undergraduate and graduate students, trainees, professionals, employees and the public. © 2026 The University of Texas MD Anderson Cancer Center. All rights reserved.
Readable Markdown	Caffeine does more than just provide a boost of energy. For many, it’s a daily ritual. A morning cup of coffee can make leaving a warm bed slightly more bearable. A shot of espresso can perk you up during that afternoon slump. Maybe you even rely on the occasional energy drink to fuel a late-night study session. But you might wonder how it impacts your health. How much is too much? And is there anything we can do to make our caffeinated drinks healthier? Clinical dietitian Kaylie Brown helps answer these questions and more. ## How does caffeine work? You likely already know how the right amount of caffeine makes you feel: fueled and ready to take on the day. But how else does caffeine affect the body? The National Institutes of Health’s [National Library of Medicine](https://medlineplus.gov/caffeine.html) writes that caffeine can: - Stimulate the central nervous system - Act as a diuretic, increasing urination - Cause your body to release more stomach acid - Possibly impact calcium absorption - Raise blood pressure ## How much caffeine is too much? Most adults can consume about 400 milligrams of caffeine per day without negative effects, the [Food and Drug Administration](https://www.fda.gov/consumers/consumer-updates/spilling-beans-how-much-caffeine-too-much) (FDA) writes. “A typical dose of caffeine is around 70 to 100 milligrams per drink,” Brown says. But many caffeinated beverages, like the pot of coffee in your office or a to-go latte, don’t come with ingredient labels that say exactly how much caffeine they contain. Resources like the [National Library of Medicine](https://medlineplus.gov/caffeine.html) provide general caffeine ranges for popular beverages. This can help you get a better idea of how much caffeine you are consuming. - Coffee (8 ounces): 95-200 milligrams - Energy drink (8 ounces): 70-100 milligrams - Cola (12 ounces): 35-45 milligrams - Tea (8 ounces): 14-60 milligrams ## What factors impact caffeine tolerance? While general caffeine recommendations can give you a sense of how much caffeine is safe to consume, caffeine intake varies from person to person. That means your caffeine intake might look different from that of a friend who can drink coffee late into the afternoon and still manage to fall asleep without issue. Brown says caffeine tolerance can vary based on factors such as: - How much caffeine you drink - How quickly you drink it - How long it takes your body to eliminate the caffeine - Body composition - Caffeine sensitivity - Medications - Health conditions ## What happens when you have too much caffeine? Your body can provide you with some helpful signs that you’ve over-caffeinated. Brown notes that symptoms of drinking too much caffeine include: - Increased heart rate - Heart palpitations - High blood pressure - Insomnia - Sleep disturbances - Anxiety - Jitters - Gastrointestinal upset - Nausea - Headaches - Seizures ## Is decaf better than a caffeinated drink? Much like your unique coffee order, this answer might look different from one person to the next. “I think that making these decisions depends on intake, overall health goals, and tolerance and side effects,” Brown says. A registered dietitian or doctor can help you decide if drinking caffeine is a good choice for you. Ready to dabble in the world of decaf? Keep in mind that cutting out caffeine abruptly can have side effects like headaches, fatigue and drowsiness, Brown says. “If you choose to cut back on your caffeine intake, I recommend doing so gradually,” she says. Another tip? If you’re trying to use medication to relieve a headache caused by a lack of caffeine, Brown says to check that it doesn’t contain more caffeine. ## Should anyone avoid caffeine altogether? It depends. Caffeine isn’t recommended for people who have certain medical conditions or who are taking some medications, Brown says. For example, she recommends that people with the following medical conditions watch their caffeine intake: - Gastroesophageal reflux disease (GERD) - Heart disease - Hepatic impairment - Hypersensitivity - Iron deficiency anemia - Peptic ulcer disease - Pregnancy - Kidney and/or urinary impairments - Seizures - Severe anxiety - Irregular heartbeats Still unsure whether it's safe for you to consume caffeine? It’s best to consult with your care team. ## Is caffeine safe for cancer patients? The answer to this question will look different for each person. Here are a few factors Brown says play into whether it’s safe for someone in [cancer treatment](https://www.mdanderson.org/treatment-options.html) to consume caffeine. - Medication - Medical and surgical history - [Side effects](https://www.mdanderson.org/patients-family/diagnosis-treatment/emotional-physical-effects.html), such as [dehydration](https://www.mdanderson.org/patients-family/diagnosis-treatment/emotional-physical-effects/dehydration.html) and [diarrhea](https://www.mdanderson.org/patients-family/diagnosis-treatment/emotional-physical-effects/bowel-management.html) “It is best to work with your medical team to determine what’s best for you,” she says. ## How can we make caffeinated beverages healthier? Caffeine can affect your health, but so can other beverage choices. “The largest concerns with coffee intake and health are less directly related to moderate amounts of caffeine consumption, but rather the habits around those beverages,” Brown says. For example, while the amount of caffeine in some specialty coffee or energy drinks may be well within the FDA’s safe daily caffeine recommendations, some can single-handedly account for more added sugar than it is [recommended to consume in a day](https://www.mdanderson.org/cancerwise/how-many-grams-of-added-sugar-should-you-have-per-day.h00-159623379.html#:~:text=MD%20Anderson%20follows%20the%20American,rich%20in%20healthy%2C%20nutritious%20foods.). Likewise, dairy products like milk, cold foam and creamer can be high in trans-fat and saturated fat. If you’re looking for healthier ways to change up the taste of your coffee, here are Brown's suggestions. - Flavor it with cinnamon or nutmeg. - Use natural sugars like maple syrup or pasteurized honey rather than artificial sweeteners. These options are still added sugar, but it doesn’t take much to sweeten your drink — try starting with a teaspoon or two. This can ultimately help you consume less sugar overall. - Not a fan of strong coffee? Rather than add sweetener, try adding skim or low-fat milk or water. “It is OK to add small amounts of items like sugar, creamer or flavorings to your coffee,” Brown says. “However, be mindful to check the ingredient list and monitor overall intake of excess calories and added sugar as this could contribute to excess weight gain.” [Request an appointment at MD Anderson online](https://my.mdanderson.org/RequestAppointment) or call 1-877-632-6789.
Shard	156 (laksa)
Root Hash	10915658028102066556
Unparsed URL	org,mdanderson!www,/cancerwise/how-much-caffeine-is-too-much.h00-159776445.html s443