🕷️ Crawler Inspector

URL Lookup

Direct Parameter Lookup

Raw Queries and Responses

1. Shard Calculation

Query:

Response:

Calculated Shard: 183 (from laksa052)

2. Crawled Status Check

Query:

curl -X POST \
  'http://laksa183.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.canada.ca/en/public-health/services/diseases/heart-health/heart-attack.html\')), getAhrefsUnparsedNoserviceFromURL(\'https://www.canada.ca/en/public-health/services/diseases/heart-health/heart-attack.html\'))) FORMAT JSONEachRow'

Response:

{"found_url":"https:\/\/www.canada.ca\/en\/public-health\/services\/diseases\/heart-health\/heart-attack.html","crawl_time":1776810709,"first_indexed_time":1494576996,"http_code":200,"src_unparsed":"ca,canada!www,\/en\/public-health\/services\/diseases\/heart-health\/heart-attack.html s443","src_root_hash":"10069666093540770583","history_drop_reason":null,"meta_title":"Heart attack - Canada.ca","meta_descriptions":["Heart attack symptoms, causes, treatment, and prevention tips to reduce risk and manage effects for better recovery."],"attrs_boilerpipe_text":"On this page\nCauses of a heart attack\nSymptoms of a heart  attack\nIf you have a heart attack\nTreating a heart  attack\nPreventing a  heart attack\nEffects of a heart  attack\nCauses of a heart attack\nA heart attack happens when an artery of  the heart suddenly closes due to plaque build-up. Plaque is made of:\nfats\ncalcium\ncholesterol\nBlood clots (thickened blood) can also  block your arteries. Arteries carry blood, oxygen and nutrients to your heart  and the rest of your body.\nAn artery of the heart can close as a  result of plaque that has built up over time. This is known as a hardening of  the arteries. When the artery closes, the supply of blood and oxygen to the  heart suddenly decreases. This lack of oxygen causes damage to the heart.\nSymptoms of a heart attack\nThe most common symptom of a heart attack  in both males and females is chest pain or discomfort. Other symptoms of a  heart attack include:\nshortness of breath\npain that may spread:\nfrom the chest area\ndown one or both arms\nto the neck, jaw or shoulders\npaleness, sweating or weakness\nchest pain with possible feelings of:\nfullness\nburning\npressure\ntightness\nsqueezing\nheaviness\ndiscomfort\ncrushing pain\nnausea, vomiting and possible indigestion\nanxiety or fear\nSymptoms experienced by females\nThe most common heart attack sign is  chest pain or discomfort. However, females can experience a heart attack  without chest pressure. They may experience:\ndizziness\nextreme fatigue\nnausea or vomiting\nshortness of breath\nupper back pressure\nlight-headedness or fainting\npressure or pain in the jaw, lower chest or  upper abdomen\nThey’re also more likely to feel some  discomfort in the chest rather than a sharp pain or tightness. The milder  symptoms don’t mean that a female's heart attack is any less severe than a male's  heart attack.\nTake\nany\nsymptoms of a heart  attack seriously.\nIf you have a heart attack \nIf you have any symptoms of a heart  attack:\ntell someone and ask them to get help right away\ncall 9-1-1 or your local emergency number\nNot getting help for your symptoms can be  fatal. The sooner you get help, the more likely you are to survive and recover  without long-term effects. Half of heart attack deaths happen within 2 hours of  the first signs.\nMany people find it hard to believe that  they’re having a heart attack. They convince themselves that the symptoms are  something else and that they will go away.\nIf you’ve had a heart attack before\nIf you’ve had a heart attack, having  important health information close by can help medical staff treat you. Keep  your personal health information easily accessible, such as on your phone or in  your wallet. You may not be able to tell medical staff this information  yourself, depending on your condition.\nYour list should include:\nallergies\nblood type\nheight and weight\nname and address\nage and birth date\nmedical conditions\nemergency contacts\ntelephone and health insurance card number\nmedical history (including surgeries)\ncurrent medications (dosage and frequency)\nhealth care provider (name and phone number)\nhealth care plan benefit card for expenses that       aren’t covered under provincial health insurance plans, such as:\nambulance services\nprescription medication\nTreating a heart attack \nNew therapies and drugs can reduce damage  and save your life if heart attack treatment begins soon enough. Your health  care provider will work with you to determine treatment and recovery needs.\nPreventing a heart attack\nThere are many different ways to reduce  your risk for heart attack and other heart-related conditions. These include:\neating a variety of healthy foods\nbeing physically active regularly\nmaintaining a healthy weight\nquitting (or not starting) smoking\navoiding use of recreational drugs\nmanaging stress\nlimiting alcohol use\nregularly monitoring your blood pressure\nIf you’ve already had a heart attack or  stroke, these changes can reduce the risk of having another.\nLearn more:\nGuidance for preventing heart disease\nHigh blood pressure (hypertension): Using an  at-home blood pressure monitor\nEffects of a heart attack \nPhysical effects of a heart attack can  include:\nsoreness\ndifficulty with strenuous activities, such as:\nlifting heavy items\npushing or pulling actions that cause you to hold        your breath\nrepetitive arm work like:\nraking\ndigging\nvacuuming\ngrass cutting\ndifficulty bathing or showering in very hot or cold       water\nIf you’ve had a heart attack, ask your  health care provider about how to manage the resulting health effects.\nOther effects of a heart attack can  include:\nemotional difficulty, possibly leading to       depression\npain or an increase in pain you already have\na return to hospital\nloneliness\nfatigue\ndeath\nA heart attack may also lead to  developing further heart diseases, such as heart failure or heart valve  disorders. \nLearn more:\nHeart  valve disorders\nHeart       diseases and conditions\nWho is most at risk \nYou’re at higher risk of heart diseases  and conditions if you:\nsmoke\nhave high blood pressure (hypertension)\nhave high cholesterol and triglyceride levels\ntriglycerides are your body’s most common form  of fat\nlive with diabetes\nalready  have a blood clotting problem\nare a male  who is 45 years of age or older\nare a female  who is 55 years of age or older\nare a female  who had pre-eclampsia or gestational hypertension during pregnancy\npre-eclampsia is characterized by high blood  pressure and significant amounts of protein in the urine during pregnancy or  after giving birth\nLearn  more:\nDiabetes\nHigh  cholesterol\nTobacco  and stroke\nTobacco  and heart disease\nHigh  blood pressure (hypertension)\nHealth  effects of smoking and second-hand smoke\nGestational  hypertension (Society of Obstetricians and Gynaecologists of Canada)\nRelated links\nHeart       diseases and conditions\nFor professionals\nHeart  disease: For health professionals","attrs_markdown":"- [Skip to main content](https:\/\/www.canada.ca\/en\/public-health\/services\/diseases\/heart-health\/heart-attack.html#wb-cont)\n- [Skip to \"About government\"](https:\/\/www.canada.ca\/en\/public-health\/services\/diseases\/heart-health\/heart-attack.html#wb-info)\n- [Switch to basic HTML version](https:\/\/www.canada.ca\/en\/public-health\/services\/diseases\/heart-health\/heart-attack.html?wbdisable=true)\n\n## Language selection\n- [Français fr](https:\/\/www.canada.ca\/fr\/sante-publique\/services\/maladies\/sante-coeur\/crise-cardiaque.html)\n\n[![Government of Canada](https:\/\/www.canada.ca\/etc\/designs\/canada\/wet-boew\/assets\/sig-blk-en.svg) \/ Gouvernement du Canada](https:\/\/www.canada.ca\/en.html)\n\n## Search\n***\n## Menu\nMain Menu\n\n- [Jobs and the workplace](https:\/\/www.canada.ca\/en\/public-health\/services\/diseases\/heart-health\/heart-attack.html)\n  - 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[Diseases and conditions](https:\/\/www.canada.ca\/en\/public-health\/services\/diseases.html)\n\n# Heart attack\n## On this page\n- [Causes of a heart attack](https:\/\/www.canada.ca\/en\/public-health\/services\/diseases\/heart-health\/heart-attack.html#a1)\n- [Symptoms of a heart attack](https:\/\/www.canada.ca\/en\/public-health\/services\/diseases\/heart-health\/heart-attack.html#a2)\n- [If you have a heart attack](https:\/\/www.canada.ca\/en\/public-health\/services\/diseases\/heart-health\/heart-attack.html#a6)\n- [Treating a heart attack](https:\/\/www.canada.ca\/en\/public-health\/services\/diseases\/heart-health\/heart-attack.html#a3)\n- [Preventing a heart attack](https:\/\/www.canada.ca\/en\/public-health\/services\/diseases\/heart-health\/heart-attack.html#a4)\n- [Effects of a heart attack](https:\/\/www.canada.ca\/en\/public-health\/services\/diseases\/heart-health\/heart-attack.html#a5)\n## Causes of a heart attack\nA heart attack happens when an artery of the heart suddenly closes due to plaque build-up. Plaque is made of:\n\n- fats\n- calcium\n- cholesterol\n\nBlood clots (thickened blood) can also block your arteries. Arteries carry blood, oxygen and nutrients to your heart and the rest of your body.\n\nAn artery of the heart can close as a result of plaque that has built up over time. This is known as a hardening of the arteries. When the artery closes, the supply of blood and oxygen to the heart suddenly decreases. This lack of oxygen causes damage to the heart.\n\n## Symptoms of a heart attack\nThe most common symptom of a heart attack in both males and females is chest pain or discomfort. Other symptoms of a heart attack include:\n\n- shortness of breath\n- pain that may spread:\n  - from the chest area\n  - down one or both arms\n  - to the neck, jaw or shoulders\n- paleness, sweating or weakness\n- chest pain with possible feelings of:\n  - fullness\n  - burning\n  - pressure\n  - tightness\n  - squeezing\n  - heaviness\n  - discomfort\n  - crushing pain\n- nausea, vomiting and possible indigestion\n- anxiety or fear\n### Symptoms experienced by females\nThe most common heart attack sign is chest pain or discomfort. However, females can experience a heart attack without chest pressure. They may experience:\n\n- dizziness\n- extreme fatigue\n- nausea or vomiting\n- shortness of breath\n- upper back pressure\n- light-headedness or fainting\n- pressure or pain in the jaw, lower chest or upper abdomen\n\nThey’re also more likely to feel some discomfort in the chest rather than a sharp pain or tightness. The milder symptoms don’t mean that a female's heart attack is any less severe than a male's heart attack.\n\nTake **any** symptoms of a heart attack seriously.\n\n## If you have a heart attack\nIf you have any symptoms of a heart attack:\n\n- tell someone and ask them to get help right away\n- call 9-1-1 or your local emergency number\n\nNot getting help for your symptoms can be fatal. The sooner you get help, the more likely you are to survive and recover without long-term effects. Half of heart attack deaths happen within 2 hours of the first signs.\n\nMany people find it hard to believe that they’re having a heart attack. They convince themselves that the symptoms are something else and that they will go away.\n\n#### If you’ve had a heart attack before\nIf you’ve had a heart attack, having important health information close by can help medical staff treat you. Keep your personal health information easily accessible, such as on your phone or in your wallet. You may not be able to tell medical staff this information yourself, depending on your condition.\n\nYour list should include:\n\n- allergies\n- blood type\n- height and weight\n- name and address\n- age and birth date\n- medical conditions\n- emergency contacts\n- telephone and health insurance card number\n- medical history (including surgeries)\n- current medications (dosage and frequency)\n- health care provider (name and phone number)\n- health care plan benefit card for expenses that aren’t covered under provincial health insurance plans, such as:\n  - ambulance services\n  - prescription medication\n## Treating a heart attack\nNew therapies and drugs can reduce damage and save your life if heart attack treatment begins soon enough. Your health care provider will work with you to determine treatment and recovery needs.\n\n## Preventing a heart attack\nThere are many different ways to reduce your risk for heart attack and other heart-related conditions. These include:\n\n- eating a variety of healthy foods\n- being physically active regularly\n- maintaining a healthy weight\n- quitting (or not starting) smoking\n- avoiding use of recreational drugs\n- managing stress\n- limiting alcohol use\n- regularly monitoring your blood pressure\n\nIf you’ve already had a heart attack or stroke, these changes can reduce the risk of having another.\n\nLearn more:\n\n- [Guidance for preventing heart disease](https:\/\/www.canada.ca\/en\/public-health\/services\/diseases\/heart-health\/heart-diseases-conditions\/prevention-heart-diseases-conditions.html#guidance)\n- [High blood pressure (hypertension): Using an at-home blood pressure monitor](https:\/\/www.canada.ca\/en\/public-health\/services\/diseases\/heart-health\/high-blood-pressure.html#monitor)\n## Effects of a heart attack\nPhysical effects of a heart attack can include:\n\n- soreness\n- difficulty with strenuous activities, such as:\n  - lifting heavy items\n  - pushing or pulling actions that cause you to hold your breath\n  - repetitive arm work like:\n    - raking\n    - digging\n    - vacuuming\n    - grass cutting\n- difficulty bathing or showering in very hot or cold water\n\nIf you’ve had a heart attack, ask your health care provider about how to manage the resulting health effects.\n\nOther effects of a heart attack can include:\n\n- emotional difficulty, possibly leading to depression\n- pain or an increase in pain you already have\n- a return to hospital\n- loneliness\n- fatigue\n- death\n\nA heart attack may also lead to developing further heart diseases, such as heart failure or heart valve disorders.\n\nLearn more:\n\n- [Heart valve disorders](https:\/\/www.canada.ca\/en\/public-health\/services\/diseases\/heart-health\/heart-valve-disorders.html)\n- [Heart diseases and conditions](https:\/\/www.canada.ca\/en\/public-health\/services\/diseases.html?heart)\n### Who is most at risk\nYou’re at higher risk of heart diseases and conditions if you:\n\n- smoke\n- have high blood pressure (hypertension)\n- have high cholesterol and triglyceride levels\n  - triglycerides are your body’s most common form of fat\n- live with diabetes\n- already have a blood clotting problem\n- are a male who is 45 years of age or older\n- are a female who is 55 years of age or older\n- are a female who had pre-eclampsia or gestational hypertension during pregnancy\n  - pre-eclampsia is characterized by high blood pressure and significant amounts of protein in the urine during pregnancy or after giving birth\n\nLearn more:\n\n- [Diabetes](https:\/\/www.canada.ca\/en\/public-health\/services\/diseases\/diabetes.html)\n- [High cholesterol](https:\/\/www.canada.ca\/en\/public-health\/services\/diseases\/heart-health\/high-cholesterol.html)\n- [Tobacco and stroke](https:\/\/www.canada.ca\/en\/health-canada\/services\/health-concerns\/tobacco\/legislation\/tobacco-product-labelling\/smoking-strokes.html)\n- [Tobacco and heart disease](https:\/\/www.canada.ca\/en\/health-canada\/services\/health-concerns\/tobacco\/legislation\/tobacco-product-labelling\/smoking-heart-disease.html)\n- [High blood pressure (hypertension)](https:\/\/www.canada.ca\/en\/public-health\/services\/diseases\/heart-health\/high-blood-pressure.html)\n- [Health effects of smoking and second-hand smoke](https:\/\/www.canada.ca\/en\/health-canada\/services\/smoking-tobacco\/health-effects-smoking-second-hand-smoke.html)\n- [Gestational hypertension (Society of Obstetricians and Gynaecologists of Canada)](https:\/\/www.pregnancyinfo.ca\/your-pregnancy\/special-consideration\/diabetes-and-hypertension\/)\n## Related links\n- [Heart diseases and conditions](https:\/\/www.canada.ca\/en\/public-health\/services\/diseases.html?heart)\n### For professionals\n- [Heart disease: For health professionals](https:\/\/www.canada.ca\/en\/public-health\/services\/diseases\/heart-health\/heart-diseases-conditions\/for-professionals-heart-diseases-conditions.html)\n\n## Page details\n### Give feedback about this page\nThank you for your feedback.\n\n2026-02-12\n\n## About this site\n### Public Health Agency of Canada\n- [Contact us](https:\/\/www.canada.ca\/en\/public-health\/corporate\/contact-us.html)\n\n### Government of Canada\n- [All contacts](https:\/\/www.canada.ca\/en\/contact.html)\n- [Departments and agencies](https:\/\/www.canada.ca\/en\/government\/dept.html)\n- [About government](https:\/\/www.canada.ca\/en\/government\/system.html)\n#### Themes and topics\n- [Jobs](https:\/\/www.canada.ca\/en\/services\/jobs.html)\n- [Immigration and citizenship](https:\/\/www.canada.ca\/en\/services\/immigration-citizenship.html)\n- [Travel and tourism](https:\/\/travel.gc.ca\/)\n- [Business](https:\/\/www.canada.ca\/en\/services\/business.html)\n- [Benefits](https:\/\/www.canada.ca\/en\/services\/benefits.html)\n- [Health](https:\/\/www.canada.ca\/en\/services\/health.html)\n- [Taxes](https:\/\/www.canada.ca\/en\/services\/taxes.html)\n- [Environment and natural resources](https:\/\/www.canada.ca\/en\/services\/environment.html)\n- [National security and defence](https:\/\/www.canada.ca\/en\/services\/defence.html)\n- [Culture, history and sport](https:\/\/www.canada.ca\/en\/services\/culture.html)\n- [Policing, justice and emergencies](https:\/\/www.canada.ca\/en\/services\/policing.html)\n- [Transport and infrastructure](https:\/\/www.canada.ca\/en\/services\/transport.html)\n- [Canada and the world](https:\/\/www.international.gc.ca\/world-monde\/index.aspx?lang=eng)\n- [Money and finances](https:\/\/www.canada.ca\/en\/services\/finance.html)\n- [Science and innovation](https:\/\/www.canada.ca\/en\/services\/science.html)\n- [Indigenous Peoples](https:\/\/www.canada.ca\/en\/services\/indigenous-peoples.html)\n- [Veterans and military](https:\/\/www.canada.ca\/en\/services\/veterans-military.html)\n- [Youth](https:\/\/www.canada.ca\/en\/services\/youth.html)\n- [Manage life events](https:\/\/www.canada.ca\/en\/services\/life-events.html)\n\n### Government of Canada Corporate\n- [Social media](https:\/\/www.canada.ca\/en\/social.html)\n- [Mobile applications](https:\/\/www.canada.ca\/en\/mobile.html)\n- [About Canada.ca](https:\/\/www.canada.ca\/en\/government\/about-canada-ca.html)\n- [Terms and conditions](https:\/\/www.canada.ca\/en\/transparency\/terms.html)\n- [Privacy](https:\/\/www.canada.ca\/en\/transparency\/privacy.html)\n\n![Symbol of the Government of Canada](https:\/\/www.canada.ca\/etc\/designs\/canada\/wet-boew\/assets\/wmms-blk.svg)","attrs_readable_markdown":"## On this page\n- [Causes of a heart attack](https:\/\/www.canada.ca\/en\/public-health\/services\/diseases\/heart-health\/heart-attack.html#a1)\n- [Symptoms of a heart attack](https:\/\/www.canada.ca\/en\/public-health\/services\/diseases\/heart-health\/heart-attack.html#a2)\n- [If you have a heart attack](https:\/\/www.canada.ca\/en\/public-health\/services\/diseases\/heart-health\/heart-attack.html#a6)\n- [Treating a heart attack](https:\/\/www.canada.ca\/en\/public-health\/services\/diseases\/heart-health\/heart-attack.html#a3)\n- [Preventing a heart attack](https:\/\/www.canada.ca\/en\/public-health\/services\/diseases\/heart-health\/heart-attack.html#a4)\n- [Effects of a heart attack](https:\/\/www.canada.ca\/en\/public-health\/services\/diseases\/heart-health\/heart-attack.html#a5)\n## Causes of a heart attack\nA heart attack happens when an artery of the heart suddenly closes due to plaque build-up. Plaque is made of:\n\n- fats\n- calcium\n- cholesterol\n\nBlood clots (thickened blood) can also block your arteries. Arteries carry blood, oxygen and nutrients to your heart and the rest of your body.\n\nAn artery of the heart can close as a result of plaque that has built up over time. This is known as a hardening of the arteries. When the artery closes, the supply of blood and oxygen to the heart suddenly decreases. This lack of oxygen causes damage to the heart.\n\n## Symptoms of a heart attack\nThe most common symptom of a heart attack in both males and females is chest pain or discomfort. Other symptoms of a heart attack include:\n\n- shortness of breath\n- pain that may spread:\n  - from the chest area\n  - down one or both arms\n  - to the neck, jaw or shoulders\n- paleness, sweating or weakness\n- chest pain with possible feelings of:\n  - fullness\n  - burning\n  - pressure\n  - tightness\n  - squeezing\n  - heaviness\n  - discomfort\n  - crushing pain\n- nausea, vomiting and possible indigestion\n- anxiety or fear\n### Symptoms experienced by females\nThe most common heart attack sign is chest pain or discomfort. However, females can experience a heart attack without chest pressure. They may experience:\n\n- dizziness\n- extreme fatigue\n- nausea or vomiting\n- shortness of breath\n- upper back pressure\n- light-headedness or fainting\n- pressure or pain in the jaw, lower chest or upper abdomen\n\nThey’re also more likely to feel some discomfort in the chest rather than a sharp pain or tightness. The milder symptoms don’t mean that a female's heart attack is any less severe than a male's heart attack.\n\nTake **any** symptoms of a heart attack seriously.\n\n## If you have a heart attack\nIf you have any symptoms of a heart attack:\n\n- tell someone and ask them to get help right away\n- call 9-1-1 or your local emergency number\n\nNot getting help for your symptoms can be fatal. The sooner you get help, the more likely you are to survive and recover without long-term effects. Half of heart attack deaths happen within 2 hours of the first signs.\n\nMany people find it hard to believe that they’re having a heart attack. They convince themselves that the symptoms are something else and that they will go away.\n\n#### If you’ve had a heart attack before\nIf you’ve had a heart attack, having important health information close by can help medical staff treat you. Keep your personal health information easily accessible, such as on your phone or in your wallet. You may not be able to tell medical staff this information yourself, depending on your condition.\n\nYour list should include:\n\n- allergies\n- blood type\n- height and weight\n- name and address\n- age and birth date\n- medical conditions\n- emergency contacts\n- telephone and health insurance card number\n- medical history (including surgeries)\n- current medications (dosage and frequency)\n- health care provider (name and phone number)\n- health care plan benefit card for expenses that aren’t covered under provincial health insurance plans, such as:\n  - ambulance services\n  - prescription medication\n## Treating a heart attack\nNew therapies and drugs can reduce damage and save your life if heart attack treatment begins soon enough. Your health care provider will work with you to determine treatment and recovery needs.\n\n## Preventing a heart attack\nThere are many different ways to reduce your risk for heart attack and other heart-related conditions. These include:\n\n- eating a variety of healthy foods\n- being physically active regularly\n- maintaining a healthy weight\n- quitting (or not starting) smoking\n- avoiding use of recreational drugs\n- managing stress\n- limiting alcohol use\n- regularly monitoring your blood pressure\n\nIf you’ve already had a heart attack or stroke, these changes can reduce the risk of having another.\n\nLearn more:\n\n- [Guidance for preventing heart disease](https:\/\/www.canada.ca\/en\/public-health\/services\/diseases\/heart-health\/heart-diseases-conditions\/prevention-heart-diseases-conditions.html#guidance)\n- [High blood pressure (hypertension): Using an at-home blood pressure monitor](https:\/\/www.canada.ca\/en\/public-health\/services\/diseases\/heart-health\/high-blood-pressure.html#monitor)\n## Effects of a heart attack\nPhysical effects of a heart attack can include:\n\n- soreness\n- difficulty with strenuous activities, such as:\n  - lifting heavy items\n  - pushing or pulling actions that cause you to hold your breath\n  - repetitive arm work like:\n    - raking\n    - digging\n    - vacuuming\n    - grass cutting\n- difficulty bathing or showering in very hot or cold water\n\nIf you’ve had a heart attack, ask your health care provider about how to manage the resulting health effects.\n\nOther effects of a heart attack can include:\n\n- emotional difficulty, possibly leading to depression\n- pain or an increase in pain you already have\n- a return to hospital\n- loneliness\n- fatigue\n- death\n\nA heart attack may also lead to developing further heart diseases, such as heart failure or heart valve disorders.\n\nLearn more:\n\n- [Heart valve disorders](https:\/\/www.canada.ca\/en\/public-health\/services\/diseases\/heart-health\/heart-valve-disorders.html)\n- [Heart diseases and conditions](https:\/\/www.canada.ca\/en\/public-health\/services\/diseases.html?heart)\n### Who is most at risk\nYou’re at higher risk of heart diseases and conditions if you:\n\n- smoke\n- have high blood pressure (hypertension)\n- have high cholesterol and triglyceride levels\n  - triglycerides are your body’s most common form of fat\n- live with diabetes\n- already have a blood clotting problem\n- are a male who is 45 years of age or older\n- are a female who is 55 years of age or older\n- are a female who had pre-eclampsia or gestational hypertension during pregnancy\n  - pre-eclampsia is characterized by high blood pressure and significant amounts of protein in the urine during pregnancy or after giving birth\n\nLearn more:\n\n- [Diabetes](https:\/\/www.canada.ca\/en\/public-health\/services\/diseases\/diabetes.html)\n- [High cholesterol](https:\/\/www.canada.ca\/en\/public-health\/services\/diseases\/heart-health\/high-cholesterol.html)\n- [Tobacco and stroke](https:\/\/www.canada.ca\/en\/health-canada\/services\/health-concerns\/tobacco\/legislation\/tobacco-product-labelling\/smoking-strokes.html)\n- [Tobacco and heart disease](https:\/\/www.canada.ca\/en\/health-canada\/services\/health-concerns\/tobacco\/legislation\/tobacco-product-labelling\/smoking-heart-disease.html)\n- [High blood pressure (hypertension)](https:\/\/www.canada.ca\/en\/public-health\/services\/diseases\/heart-health\/high-blood-pressure.html)\n- [Health effects of smoking and second-hand smoke](https:\/\/www.canada.ca\/en\/health-canada\/services\/smoking-tobacco\/health-effects-smoking-second-hand-smoke.html)\n- [Gestational hypertension (Society of Obstetricians and Gynaecologists of Canada)](https:\/\/www.pregnancyinfo.ca\/your-pregnancy\/special-consideration\/diabetes-and-hypertension\/)\n## Related links\n- [Heart diseases and conditions](https:\/\/www.canada.ca\/en\/public-health\/services\/diseases.html?heart)\n### For professionals\n- [Heart disease: For health professionals](https:\/\/www.canada.ca\/en\/public-health\/services\/diseases\/heart-health\/heart-diseases-conditions\/for-professionals-heart-diseases-conditions.html)","meta_canonical":null}

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URL	https://www.canada.ca/en/public-health/services/diseases/heart-health/heart-attack.html
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Boilerpipe Text	On this page Causes of a heart attack Symptoms of a heart attack If you have a heart attack Treating a heart attack Preventing a heart attack Effects of a heart attack Causes of a heart attack A heart attack happens when an artery of the heart suddenly closes due to plaque build-up. Plaque is made of: fats calcium cholesterol Blood clots (thickened blood) can also block your arteries. Arteries carry blood, oxygen and nutrients to your heart and the rest of your body. An artery of the heart can close as a result of plaque that has built up over time. This is known as a hardening of the arteries. When the artery closes, the supply of blood and oxygen to the heart suddenly decreases. This lack of oxygen causes damage to the heart. Symptoms of a heart attack The most common symptom of a heart attack in both males and females is chest pain or discomfort. Other symptoms of a heart attack include: shortness of breath pain that may spread: from the chest area down one or both arms to the neck, jaw or shoulders paleness, sweating or weakness chest pain with possible feelings of: fullness burning pressure tightness squeezing heaviness discomfort crushing pain nausea, vomiting and possible indigestion anxiety or fear Symptoms experienced by females The most common heart attack sign is chest pain or discomfort. However, females can experience a heart attack without chest pressure. They may experience: dizziness extreme fatigue nausea or vomiting shortness of breath upper back pressure light-headedness or fainting pressure or pain in the jaw, lower chest or upper abdomen They’re also more likely to feel some discomfort in the chest rather than a sharp pain or tightness. The milder symptoms don’t mean that a female's heart attack is any less severe than a male's heart attack. Take any symptoms of a heart attack seriously. If you have a heart attack If you have any symptoms of a heart attack: tell someone and ask them to get help right away call 9-1-1 or your local emergency number Not getting help for your symptoms can be fatal. The sooner you get help, the more likely you are to survive and recover without long-term effects. Half of heart attack deaths happen within 2 hours of the first signs. Many people find it hard to believe that they’re having a heart attack. They convince themselves that the symptoms are something else and that they will go away. If you’ve had a heart attack before If you’ve had a heart attack, having important health information close by can help medical staff treat you. Keep your personal health information easily accessible, such as on your phone or in your wallet. You may not be able to tell medical staff this information yourself, depending on your condition. Your list should include: allergies blood type height and weight name and address age and birth date medical conditions emergency contacts telephone and health insurance card number medical history (including surgeries) current medications (dosage and frequency) health care provider (name and phone number) health care plan benefit card for expenses that aren’t covered under provincial health insurance plans, such as: ambulance services prescription medication Treating a heart attack New therapies and drugs can reduce damage and save your life if heart attack treatment begins soon enough. Your health care provider will work with you to determine treatment and recovery needs. Preventing a heart attack There are many different ways to reduce your risk for heart attack and other heart-related conditions. These include: eating a variety of healthy foods being physically active regularly maintaining a healthy weight quitting (or not starting) smoking avoiding use of recreational drugs managing stress limiting alcohol use regularly monitoring your blood pressure If you’ve already had a heart attack or stroke, these changes can reduce the risk of having another. Learn more: Guidance for preventing heart disease High blood pressure (hypertension): Using an at-home blood pressure monitor Effects of a heart attack Physical effects of a heart attack can include: soreness difficulty with strenuous activities, such as: lifting heavy items pushing or pulling actions that cause you to hold your breath repetitive arm work like: raking digging vacuuming grass cutting difficulty bathing or showering in very hot or cold water If you’ve had a heart attack, ask your health care provider about how to manage the resulting health effects. Other effects of a heart attack can include: emotional difficulty, possibly leading to depression pain or an increase in pain you already have a return to hospital loneliness fatigue death A heart attack may also lead to developing further heart diseases, such as heart failure or heart valve disorders. Learn more: Heart valve disorders Heart diseases and conditions Who is most at risk You’re at higher risk of heart diseases and conditions if you: smoke have high blood pressure (hypertension) have high cholesterol and triglyceride levels triglycerides are your body’s most common form of fat live with diabetes already have a blood clotting problem are a male who is 45 years of age or older are a female who is 55 years of age or older are a female who had pre-eclampsia or gestational hypertension during pregnancy pre-eclampsia is characterized by high blood pressure and significant amounts of protein in the urine during pregnancy or after giving birth Learn more: Diabetes High cholesterol Tobacco and stroke Tobacco and heart disease High blood pressure (hypertension) Health effects of smoking and second-hand smoke Gestational hypertension (Society of Obstetricians and Gynaecologists of Canada) Related links Heart diseases and conditions For professionals Heart disease: For health professionals
Markdown	- [Skip to main content](https://www.canada.ca/en/public-health/services/diseases/heart-health/heart-attack.html#wb-cont) - [Skip to "About government"](https://www.canada.ca/en/public-health/services/diseases/heart-health/heart-attack.html#wb-info) - [Switch to basic HTML version](https://www.canada.ca/en/public-health/services/diseases/heart-health/heart-attack.html?wbdisable=true) ## Language selection - [Français fr](https://www.canada.ca/fr/sante-publique/services/maladies/sante-coeur/crise-cardiaque.html) [![Government of Canada](https://www.canada.ca/etc/designs/canada/wet-boew/assets/sig-blk-en.svg) / Gouvernement du Canada](https://www.canada.ca/en.html) ## Search *** ## Menu Main Menu - [Jobs and the workplace](https://www.canada.ca/en/public-health/services/diseases/heart-health/heart-attack.html) - [Jobs: home](https://www.canada.ca/en/services/jobs.html) - [Job Bank](https://www.jobbank.gc.ca/findajob) - [Government of Canada jobs](https://www.canada.ca/en/services/jobs/opportunities/government.html) - 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[Most requested](https://www.canada.ca/en/public-health/services/diseases/heart-health/heart-attack.html) - [Sign in to your IRCC account](https://www.canada.ca/en/immigration-refugees-citizenship/services/application/ircc-accounts.html) - [Check your application status](https://www.canada.ca/en/immigration-refugees-citizenship/services/application/check-status.html) - [Current processing times](https://www.canada.ca/en/immigration-refugees-citizenship/services/application/check-processing-times.html) - [Find an application form](https://www.canada.ca/en/immigration-refugees-citizenship/services/application/application-forms-guides.html) - [Portals for representatives and partners](https://www.canada.ca/en/immigration-refugees-citizenship/corporate/partners-service-providers.html) - [Travel and tourism](https://www.canada.ca/en/public-health/services/diseases/heart-health/heart-attack.html) - [Travel and tourism: home](https://travel.gc.ca/) - [Travel advice and advisories](https://travel.gc.ca/travelling/advisories) - [Travel outside Canada](https://travel.gc.ca/travelling) - [Air travel](https://travel.gc.ca/air) - [Canadian passports and travel documents](https://www.canada.ca/en/immigration-refugees-citizenship/services/canadian-passports.html) - [Stay connected](https://travel.gc.ca/stay-connected) - [Assistance outside Canada](https://travel.gc.ca/assistance) - [Visit Canada](https://www.canada.ca/en/immigration-refugees-citizenship/services/visit-canada.html?outside) - [Return or travel to Canada](https://travel.gc.ca/returning) - [Canadian attractions, events and experiences](https://travel.gc.ca/canadian-tourism) - [Most requested](https://www.canada.ca/en/public-health/services/diseases/heart-health/heart-attack.html) - [Emergency assistance abroad](https://travel.gc.ca/assistance/emergency-assistance) - [Find out if you need a visa to travel to Canada](https://www.ircc.canada.ca/english/visit/visas.asp) - [Apply for an eTA](https://www.canada.ca/en/immigration-refugees-citizenship/services/visit-canada/eta.html) - [Apply for NEXUS](https://www.cbsa-asfc.gc.ca/services/travel-voyage/prog/nexus/menu-eng.html) - [Register as a Canadian abroad](https://travel.gc.ca/travelling/registration) - [Travel insurance](https://travel.gc.ca/travelling/documents/travel-insurance) - [Business and industry](https://www.canada.ca/en/public-health/services/diseases/heart-health/heart-attack.html) - [Business and industry: home](https://www.canada.ca/en/services/business.html) - [Starting a business](https://www.canada.ca/en/services/business/start.html) - [Business taxes](https://www.canada.ca/en/services/business/taxes.html) - [Business financing and support](https://innovation.ised-isde.canada.ca/s/?language=en_CA) - [Federal corporations](https://ised-isde.canada.ca/site/corporations-canada/en) - [Maintaining your business](https://www.canada.ca/en/services/business/maintaingrowimprovebusiness.html) - [Permits, licences and regulations](https://www.canada.ca/en/services/business/permits.html) - [Hiring and managing employees](https://www.canada.ca/en/services/business/hire.html) - [International trade and investment](https://international.canada.ca/en/services/business/trade) - [Intellectual property and copyright](https://www.canada.ca/en/services/business/ip.html) - [Research and business intelligence](https://www.canada.ca/en/services/business/research.html) - [Doing business with government](https://www.canada.ca/en/services/business/doing-business.html) - [R\&D and innovation](https://www.canada.ca/en/services/science/innovation.html) - [Protecting your business](https://www.canada.ca/en/services/business/protecting.html) - [Insolvency for business](https://ised-isde.canada.ca/site/office-superintendent-bankruptcy/en/you-owe-money) - [Most requested](https://www.canada.ca/en/public-health/services/diseases/heart-health/heart-attack.html) - [Canada's response to U.S. tariffs on Canadian goods](https://www.canada.ca/en/department-finance/programs/international-trade-finance-policy/canadas-response-us-tariffs.html) - [Find a corporation](https://ised-isde.canada.ca/cc/lgcy/fdrlCrpSrch.html?locale=en_CA) - [File Corporations Canada annual return](https://ised-isde.canada.ca/site/corporations-canada/en/keep-your-corporation-good-shape/annual-return) - [My Business Account (Canada Revenue Agency)](https://www.canada.ca/en/revenue-agency/services/e-services/digital-services-businesses/business-account.html) - [Helping small businesses get loans](https://ised-isde.canada.ca/site/canada-small-business-financing-program/en) - [Loans to improve cash flow and increase sales](https://www.bdc.ca/en/financing/small-business-loan) - [Benefits](https://www.canada.ca/en/public-health/services/diseases/heart-health/heart-attack.html) - [Benefits: home](https://www.canada.ca/en/services/benefits.html) - [Employment Insurance benefits and leave](https://www.canada.ca/en/services/benefits/ei.html) - [Canadian Dental Care Plan](https://www.canada.ca/en/services/benefits/dental/dental-care-plan.html) - [Disability benefits](https://www.canada.ca/en/services/benefits/disability.html) - [Family and caregiving benefits](https://www.canada.ca/en/services/benefits/family.html) - [Public pensions](https://www.canada.ca/en/services/benefits/publicpensions.html) - [Grants and funding opportunities](https://www.canada.ca/en/employment-social-development/services/funding/programs.html) - [Student aid and education planning](https://www.canada.ca/en/services/benefits/education.html) - [Housing benefits](https://www.canada.ca/en/services/benefits/housing.html) - [Benefits by audience](https://www.canada.ca/en/services/benefits/audience.html) - [Benefits payment dates](https://www.canada.ca/en/services/benefits/calendar.html) - [Benefits finder](https://www.canada.ca/en/services/benefits/finder.html) - [What to do when someone dies](https://www.canada.ca/en/services/death.html) - [Most requested](https://www.canada.ca/en/public-health/services/diseases/heart-health/heart-attack.html) - [Status checker - Dental Plan](https://www.canada.ca/en/services/benefits/ei/ei-regular-benefit.html) - [Apply for Employment Insurance](https://www.canada.ca/en/services/benefits/ei/ei-regular-benefit.html) - [Apply for student loans and grants](https://www.canada.ca/en/services/benefits/education/student-aid.html) - [Child and family benefits calculators](https://www.canada.ca/en/revenue-agency/services/child-family-benefits/child-family-benefits-calculator.html) - [Sign in to a Government of Canada online account](https://www.canada.ca/en/government/sign-in-online-account.html) - [Set up or change direct deposit](https://www.canada.ca/en/public-services-procurement/services/payments-to-from-government/direct-deposit.html) - [Submit your EI report with the Internet Reporting Service](https://www.canada.ca/en/services/benefits/ei/employment-insurance-reporting.html#Internet-Reporting-Service) - [Health](https://www.canada.ca/en/public-health/services/diseases/heart-health/heart-attack.html) - [Health: home](https://www.canada.ca/en/services/health.html) - [Food and nutrition](https://www.canada.ca/en/services/health/food-nutrition.html) - [Drug and health products](https://www.canada.ca/en/services/health/drug-health-products.html) - [Vaccines and immunization](https://www.canada.ca/en/public-health/services/immunization-vaccines.html) - [Diseases and conditions](https://www.canada.ca/en/public-health/services/diseases.html) - [Health system and services](https://www.canada.ca/en/services/health/health-system-services.html) - [Product safety](https://www.canada.ca/en/services/health/product-safety.html) - [Healthy living](https://www.canada.ca/en/services/health/healthy-living.html) - [Health risks and safety](https://www.canada.ca/en/services/health/health-risks-safety.html) - [Health science, research and data](https://www.canada.ca/en/services/health/science-research-data.html) - [Indigenous health](https://www.sac-isc.gc.ca/eng/1569861171996/1569861324236) - [Most requested](https://www.canada.ca/en/public-health/services/diseases/heart-health/heart-attack.html) - [Canadian Dental Care Plan](https://www.canada.ca/en/services/benefits/dental/dental-care-plan.html) - [Recalls and safety alerts](https://recalls-rappels.canada.ca/en) - [Canada's food guide](https://food-guide.canada.ca/en/) - [Autism](https://www.canada.ca/en/public-health/services/diseases/autism-spectrum-disorder-asd.html) - [Taxes](https://www.canada.ca/en/public-health/services/diseases/heart-health/heart-attack.html) - [Taxes: home](https://www.canada.ca/en/services/taxes.html) - [Income tax](https://www.canada.ca/en/services/taxes/income-tax.html) - [Payments](https://www.canada.ca/en/revenue-agency/services/payments.html) - [Tax credits and benefits for individuals](https://www.canada.ca/en/services/taxes/child-and-family-benefits.html) - [GST/HST](https://www.canada.ca/en/revenue-agency/services/tax/businesses/topics/gst-hst-businesses.html) - [Payroll](https://www.canada.ca/en/revenue-agency/services/tax/businesses/topics/payroll.html) - [Business number](https://www.canada.ca/en/services/taxes/business-number.html) - [Charities and giving](https://www.canada.ca/en/services/taxes/charities.html) - [Savings and pension plans](https://www.canada.ca/en/services/taxes/savings-and-pension-plans.html) - [Excise and specialty taxes](https://www.canada.ca/en/services/taxes/excise-taxes-duties-and-levies.html) - [Scams and fraud](https://www.canada.ca/en/revenue-agency/corporate/scams-fraud.html) - [Support in difficult situations](https://www.canada.ca/en/revenue-agency/services/support-difficult-situations.html) - [Compliance and enforcement](https://www.canada.ca/en/revenue-agency/programs/about-canada-revenue-agency-cra/compliance.html) - [CRA Service feedback](https://www.canada.ca/en/revenue-agency/services/make-a-service-complaint.html) - [Most requested](https://www.canada.ca/en/public-health/services/diseases/heart-health/heart-attack.html) - [CRA sign in](https://www.canada.ca/en/revenue-agency/services/e-services/cra-login-services.html) - [Ready to file your GST/HST return](https://www.canada.ca/en/revenue-agency/services/tax/businesses/topics/gst-hst-businesses/file-gst-hst-return/how-file.html#h_3) - [Find benefit payment dates](https://www.canada.ca/en/services/benefits/calendar.html) - [Forms and publications](https://www.canada.ca/en/revenue-agency/services/forms-publications.html) - [Make a payment to the CRA](https://www.canada.ca/en/revenue-agency/services/payments/payments-cra.html) - [Environment and natural resources](https://www.canada.ca/en/public-health/services/diseases/heart-health/heart-attack.html) - [Environment and natural resources: home](https://www.canada.ca/en/services/environment.html) - [Weather and hazards](https://www.canada.ca/en/services/environment/weather.html) - [Climate change](https://www.canada.ca/en/services/environment/climatechange.html) - [Energy](https://www.canada.ca/en/services/environment/energy.html) - [Natural resources](https://www.canada.ca/en/services/environment/natural-resources.html) - [Agricultural production tools and data](https://agriculture.canada.ca/en/agricultural-production) - [Environment and sustainability in agriculture](https://agriculture.canada.ca/en/environment) - [Fisheries](https://www.canada.ca/en/services/environment/fisheries.html) - [Wildlife, plants and species](https://www.canada.ca/en/services/environment/wildlife-plants-species.html) - [Pollution and waste management](https://www.canada.ca/en/services/environment/pollution-waste-management.html) - [Environmental conservation and protection](https://www.canada.ca/en/services/environment/conservation.html) - [Environment statistics](https://www.statcan.gc.ca/en/subjects-start/environment) - [Water and the environment](https://www.canada.ca/en/environment-climate-change/services/water-overview.html) - [Most requested](https://www.canada.ca/en/public-health/services/diseases/heart-health/heart-attack.html) - [Local weather forecast](https://weather.gc.ca/canada_e.html) - [Fuel-efficient vehicles](https://natural-resources.canada.ca/energy-efficiency/transportation-energy-efficiency/personal-vehicles/most-fuel-efficient-vehicles) - [Home energy efficiency](https://natural-resources.canada.ca/energy-efficiency/home-energy-efficiency/energy-efficiency-homes) - [Prepare for severe weather](https://www.canada.ca/en/environment-climate-change/services/seasonal-weather-hazards.html) - [Download WeatherCAN](https://www.canada.ca/en/environment-climate-change/services/weather-general-tools-resources/weathercan.html) - [National security and defence](https://www.canada.ca/en/public-health/services/diseases/heart-health/heart-attack.html) - [National security and defenceDefence: home](https://www.canada.ca/en/services/defence.html) - [National security](https://www.canada.ca/en/services/defence/nationalsecurity.html) - [Canadian Armed Forces](https://www.canada.ca/en/services/defence/caf.html) - [Jobs in national security and defence](https://www.canada.ca/en/services/defence/jobs.html) - [Services and benefits](https://www.canada.ca/en/government/publicservice/benefitsmilitary.html) - [Cyber security](https://www.canada.ca/en/services/defence/cybersecurity.html) - [Defence equipment purchases and upgrades](https://www.canada.ca/en/services/defence/defence-equipment-purchases-upgrades.html) - [Securing the border](https://www.canada.ca/en/services/defence/securingborder.html) - [Transportation security](https://tc.canada.ca/en/corporate-services/transportation-security) - [Most requested](https://www.canada.ca/en/public-health/services/diseases/heart-health/heart-attack.html) - [Jobs in the Forces](https://forces.ca/en/careers/) - [Canadian military support to Ukraine](https://www.canada.ca/en/department-national-defence/campaigns/canadian-military-support-to-ukraine.html) - [Military ranks](https://www.canada.ca/en/services/defence/caf/military-identity-system/rank-appointment-insignia.html) - [Defence equipment](https://www.canada.ca/en/services/defence/caf/equipment.html) - [Canada's Defence policy](https://www.canada.ca/en/department-national-defence/corporate/policies-standards/our-north-strong-free-renewed-vision-canada-defence.html) - [Join the Cadet Program](https://www.canada.ca/en/department-national-defence/services/cadets-junior-canadian-rangers/cadets/join-us.html) - [Culture, history and sport](https://www.canada.ca/en/public-health/services/diseases/heart-health/heart-attack.html) - [Culture, history and sport: home](https://www.canada.ca/en/services/culture.html) - [Funding - Culture, history and sport](https://www.canada.ca/en/canadian-heritage/services/funding.html) - [Events, celebrations and commemorations](https://www.canada.ca/en/services/culture/events-celebrations-commemorations.html) - [Cultural landmarks and attractions](https://www.canada.ca/en/services/culture/cultural-attractions.html) - [Canadian identity and society](https://www.canada.ca/en/services/culture/canadian-identity-society.html) - [Sport](https://www.canada.ca/en/services/culture/sport.html) - [History and heritage](https://www.canada.ca/en/services/culture/history-heritage.html) - [Arts and media](https://www.canada.ca/en/services/culture/arts-media.html) - [Youth leadership and cultural program](https://www.canada.ca/en/services/culture/cultural-youth-programs.html) - [Cultural trade and investment](https://www.canada.ca/en/services/culture/cultural-trade-investment.html) - [Most requested](https://www.canada.ca/en/public-health/services/diseases/heart-health/heart-attack.html) - [Visit the Canadian Virtual War Memorial](https://www.veterans.gc.ca/en/remembrance/memorials/canadian-virtual-war-memorial) - [Anthems and symbols of Canada](https://www.canada.ca/en/services/culture/canadian-identity-society/anthems-symbols.html) - [Find a CRTC decision](https://crtc.gc.ca/eng/dno.htm) - [Research your family history](https://library-archives.canada.ca/eng/collection/research-help/genealogy-family-history/Pages/genealogy-family-history.aspx) - [Search census records](https://recherche-collection-search.bac-lac.gc.ca/eng/Census/index) - [Major events in Canada's Capital Region](https://www.canada.ca/en/services/culture/events-celebrations-commemorations/experience-canada-capital/events-capital.html) - [Policing, justice and emergencies](https://www.canada.ca/en/public-health/services/diseases/heart-health/heart-attack.html) - [Policing, justice and emergencies: home](https://www.canada.ca/en/services/policing.html) - [Policing](https://www.canada.ca/en/services/policing/police.html) - [Justice](https://www.canada.ca/en/services/policing/justice.html) - [Emergencies](https://www.canada.ca/en/services/policing/emergencies.html) - [Corrections](https://www.canada.ca/en/services/policing/corrections.html) - [Parole, record suspension, expungement and clemency](https://www.canada.ca/en/services/policing/parole.html) - [Victims of crime](https://www.canada.ca/en/services/policing/victims.html) - [Crime and justice statistics](https://www.statcan.gc.ca/en/subjects-start/crime_and_justice) - [Most requested](https://www.canada.ca/en/public-health/services/diseases/heart-health/heart-attack.html) - [Wildfire Response](https://www.canada.ca/en/public-safety-canada/campaigns/wildfires.html) - [Apply/Renew a firearms licence](https://rcmp.ca/en/firearms) - [Get a criminal records check](https://rcmp.ca/en/criminal-records/criminal-record-checks) - [Apply for a criminal record suspension](https://www.canada.ca/en/parole-board/services/record-suspensions/official-pbc-application-guide-and-forms.html) - [What to do during an emergency](https://www.getprepared.gc.ca/cnt/hzd/drng-en.aspx) - [Know the law on impaired driving](https://www.canada.ca/en/services/policing/police/community-safety-policing/impaired-driving.html) - [Help solve a crime](https://www.canada.ca/en/services/policing/police/help-solve-crime.html) - [Transport and infrastructure](https://www.canada.ca/en/public-health/services/diseases/heart-health/heart-attack.html) - [Transport and infrastructure: home](https://www.canada.ca/en/services/transport.html) - [Zero-emission vehicles](https://www.canada.ca/en/services/transport/zero-emission-vehicles.html) - [Aviation](https://tc.canada.ca/en/aviation) - [Marine transportation](https://tc.canada.ca/en/marine-transportation) - [Road transportation](https://tc.canada.ca/en/road-transportation) - [Rail transportation](https://tc.canada.ca/en/rail-transportation) - [Dangerous goods](https://tc.canada.ca/en/dangerous-goods) - [Infrastructure](https://tc.canada.ca/en/infrastructure) - [Most requested](https://www.canada.ca/en/public-health/services/diseases/heart-health/heart-attack.html) - [Drone safety](https://tc.canada.ca/en/aviation/drone-safety) - [What not to bring on a plane](https://tc.canada.ca/en/aviation/aviation-security/what-you-can-t-bring-plane) - [Register your vessel](https://tc.canada.ca/en/marine-transportation/vessel-licensing-registration) - [Child car seat safety](https://tc.canada.ca/en/road-transportation/child-car-seat-safety) - [Transporting dangerous goods - Regulations](https://tc.canada.ca/en/corporate-services/acts-regulations/list-regulations/transportation-dangerous-goods-regulations) - [Canadian Aviation Regulations](https://tc.canada.ca/en/corporate-services/acts-regulations/list-regulations/canadian-aviation-regulations-sor-96-433) - [Canada and the world](https://www.canada.ca/en/public-health/services/diseases/heart-health/heart-attack.html) - [Canada and the world: home](https://www.international.gc.ca/world-monde/index.aspx?lang=eng) - [International offices and emergency contacts](https://www.international.gc.ca/world-monde/offices-bureaux/index.aspx?lang=eng) - [Study, work and travel worldwide](https://www.international.gc.ca/world-monde/study_work_travel-etude_travail_voyage/index.aspx?lang=eng) - [Information by country and territory](https://www.international.gc.ca/world-monde/country-pays/index.aspx?lang=eng) - [Stories](https://www.international.gc.ca/world-monde/stories-histoires/index.aspx?lang=eng) - [Canada's foreign policy and international relations](https://www.international.gc.ca/world-monde/international_relations-relations_internationales/index.aspx?lang=eng) - [Global issues and international assistance](https://www.international.gc.ca/world-monde/issues_development-enjeux_developpement/index.aspx?lang=eng) - [Canadian funding for international initiatives](https://www.international.gc.ca/world-monde/funding-financement/index.aspx?lang=eng) - [International trade and investment](https://international.canada.ca/en/services/business/trade) - 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[Diseases and conditions](https://www.canada.ca/en/public-health/services/diseases.html) # Heart attack ## On this page - [Causes of a heart attack](https://www.canada.ca/en/public-health/services/diseases/heart-health/heart-attack.html#a1) - [Symptoms of a heart attack](https://www.canada.ca/en/public-health/services/diseases/heart-health/heart-attack.html#a2) - [If you have a heart attack](https://www.canada.ca/en/public-health/services/diseases/heart-health/heart-attack.html#a6) - [Treating a heart attack](https://www.canada.ca/en/public-health/services/diseases/heart-health/heart-attack.html#a3) - [Preventing a heart attack](https://www.canada.ca/en/public-health/services/diseases/heart-health/heart-attack.html#a4) - [Effects of a heart attack](https://www.canada.ca/en/public-health/services/diseases/heart-health/heart-attack.html#a5) ## Causes of a heart attack A heart attack happens when an artery of the heart suddenly closes due to plaque build-up. Plaque is made of: - fats - calcium - cholesterol Blood clots (thickened blood) can also block your arteries. Arteries carry blood, oxygen and nutrients to your heart and the rest of your body. An artery of the heart can close as a result of plaque that has built up over time. This is known as a hardening of the arteries. When the artery closes, the supply of blood and oxygen to the heart suddenly decreases. This lack of oxygen causes damage to the heart. ## Symptoms of a heart attack The most common symptom of a heart attack in both males and females is chest pain or discomfort. Other symptoms of a heart attack include: - shortness of breath - pain that may spread: - from the chest area - down one or both arms - to the neck, jaw or shoulders - paleness, sweating or weakness - chest pain with possible feelings of: - fullness - burning - pressure - tightness - squeezing - heaviness - discomfort - crushing pain - nausea, vomiting and possible indigestion - anxiety or fear ### Symptoms experienced by females The most common heart attack sign is chest pain or discomfort. However, females can experience a heart attack without chest pressure. They may experience: - dizziness - extreme fatigue - nausea or vomiting - shortness of breath - upper back pressure - light-headedness or fainting - pressure or pain in the jaw, lower chest or upper abdomen They’re also more likely to feel some discomfort in the chest rather than a sharp pain or tightness. The milder symptoms don’t mean that a female's heart attack is any less severe than a male's heart attack. Take any symptoms of a heart attack seriously. ## If you have a heart attack If you have any symptoms of a heart attack: - tell someone and ask them to get help right away - call 9-1-1 or your local emergency number Not getting help for your symptoms can be fatal. The sooner you get help, the more likely you are to survive and recover without long-term effects. Half of heart attack deaths happen within 2 hours of the first signs. Many people find it hard to believe that they’re having a heart attack. They convince themselves that the symptoms are something else and that they will go away. #### If you’ve had a heart attack before If you’ve had a heart attack, having important health information close by can help medical staff treat you. Keep your personal health information easily accessible, such as on your phone or in your wallet. You may not be able to tell medical staff this information yourself, depending on your condition. Your list should include: - allergies - blood type - height and weight - name and address - age and birth date - medical conditions - emergency contacts - telephone and health insurance card number - medical history (including surgeries) - current medications (dosage and frequency) - health care provider (name and phone number) - health care plan benefit card for expenses that aren’t covered under provincial health insurance plans, such as: - ambulance services - prescription medication ## Treating a heart attack New therapies and drugs can reduce damage and save your life if heart attack treatment begins soon enough. Your health care provider will work with you to determine treatment and recovery needs. ## Preventing a heart attack There are many different ways to reduce your risk for heart attack and other heart-related conditions. These include: - eating a variety of healthy foods - being physically active regularly - maintaining a healthy weight - quitting (or not starting) smoking - avoiding use of recreational drugs - managing stress - limiting alcohol use - regularly monitoring your blood pressure If you’ve already had a heart attack or stroke, these changes can reduce the risk of having another. Learn more: - [Guidance for preventing heart disease](https://www.canada.ca/en/public-health/services/diseases/heart-health/heart-diseases-conditions/prevention-heart-diseases-conditions.html#guidance) - [High blood pressure (hypertension): Using an at-home blood pressure monitor](https://www.canada.ca/en/public-health/services/diseases/heart-health/high-blood-pressure.html#monitor) ## Effects of a heart attack Physical effects of a heart attack can include: - soreness - difficulty with strenuous activities, such as: - lifting heavy items - pushing or pulling actions that cause you to hold your breath - repetitive arm work like: - raking - digging - vacuuming - grass cutting - difficulty bathing or showering in very hot or cold water If you’ve had a heart attack, ask your health care provider about how to manage the resulting health effects. Other effects of a heart attack can include: - emotional difficulty, possibly leading to depression - pain or an increase in pain you already have - a return to hospital - loneliness - fatigue - death A heart attack may also lead to developing further heart diseases, such as heart failure or heart valve disorders. Learn more: - [Heart valve disorders](https://www.canada.ca/en/public-health/services/diseases/heart-health/heart-valve-disorders.html) - [Heart diseases and conditions](https://www.canada.ca/en/public-health/services/diseases.html?heart) ### Who is most at risk You’re at higher risk of heart diseases and conditions if you: - smoke - have high blood pressure (hypertension) - have high cholesterol and triglyceride levels - triglycerides are your body’s most common form of fat - live with diabetes - already have a blood clotting problem - are a male who is 45 years of age or older - are a female who is 55 years of age or older - are a female who had pre-eclampsia or gestational hypertension during pregnancy - pre-eclampsia is characterized by high blood pressure and significant amounts of protein in the urine during pregnancy or after giving birth Learn more: - [Diabetes](https://www.canada.ca/en/public-health/services/diseases/diabetes.html) - [High cholesterol](https://www.canada.ca/en/public-health/services/diseases/heart-health/high-cholesterol.html) - [Tobacco and stroke](https://www.canada.ca/en/health-canada/services/health-concerns/tobacco/legislation/tobacco-product-labelling/smoking-strokes.html) - [Tobacco and heart disease](https://www.canada.ca/en/health-canada/services/health-concerns/tobacco/legislation/tobacco-product-labelling/smoking-heart-disease.html) - [High blood pressure (hypertension)](https://www.canada.ca/en/public-health/services/diseases/heart-health/high-blood-pressure.html) - [Health effects of smoking and second-hand smoke](https://www.canada.ca/en/health-canada/services/smoking-tobacco/health-effects-smoking-second-hand-smoke.html) - [Gestational hypertension (Society of Obstetricians and Gynaecologists of Canada)](https://www.pregnancyinfo.ca/your-pregnancy/special-consideration/diabetes-and-hypertension/) ## Related links - [Heart diseases and conditions](https://www.canada.ca/en/public-health/services/diseases.html?heart) ### For professionals - [Heart disease: For health professionals](https://www.canada.ca/en/public-health/services/diseases/heart-health/heart-diseases-conditions/for-professionals-heart-diseases-conditions.html) ## Page details ### Give feedback about this page Thank you for your feedback. 2026-02-12 ## About this site ### Public Health Agency of Canada - [Contact us](https://www.canada.ca/en/public-health/corporate/contact-us.html) ### Government of Canada - [All contacts](https://www.canada.ca/en/contact.html) - [Departments and agencies](https://www.canada.ca/en/government/dept.html) - [About government](https://www.canada.ca/en/government/system.html) #### Themes and topics - [Jobs](https://www.canada.ca/en/services/jobs.html) - [Immigration and citizenship](https://www.canada.ca/en/services/immigration-citizenship.html) - [Travel and tourism](https://travel.gc.ca/) - [Business](https://www.canada.ca/en/services/business.html) - [Benefits](https://www.canada.ca/en/services/benefits.html) - [Health](https://www.canada.ca/en/services/health.html) - [Taxes](https://www.canada.ca/en/services/taxes.html) - [Environment and natural resources](https://www.canada.ca/en/services/environment.html) - [National security and defence](https://www.canada.ca/en/services/defence.html) - [Culture, history and sport](https://www.canada.ca/en/services/culture.html) - [Policing, justice and emergencies](https://www.canada.ca/en/services/policing.html) - [Transport and infrastructure](https://www.canada.ca/en/services/transport.html) - [Canada and the world](https://www.international.gc.ca/world-monde/index.aspx?lang=eng) - [Money and finances](https://www.canada.ca/en/services/finance.html) - [Science and innovation](https://www.canada.ca/en/services/science.html) - [Indigenous Peoples](https://www.canada.ca/en/services/indigenous-peoples.html) - [Veterans and military](https://www.canada.ca/en/services/veterans-military.html) - [Youth](https://www.canada.ca/en/services/youth.html) - [Manage life events](https://www.canada.ca/en/services/life-events.html) ### Government of Canada Corporate - [Social media](https://www.canada.ca/en/social.html) - [Mobile applications](https://www.canada.ca/en/mobile.html) - [About Canada.ca](https://www.canada.ca/en/government/about-canada-ca.html) - [Terms and conditions](https://www.canada.ca/en/transparency/terms.html) - [Privacy](https://www.canada.ca/en/transparency/privacy.html) ![Symbol of the Government of Canada](https://www.canada.ca/etc/designs/canada/wet-boew/assets/wmms-blk.svg)
Readable Markdown	## On this page - [Causes of a heart attack](https://www.canada.ca/en/public-health/services/diseases/heart-health/heart-attack.html#a1) - [Symptoms of a heart attack](https://www.canada.ca/en/public-health/services/diseases/heart-health/heart-attack.html#a2) - [If you have a heart attack](https://www.canada.ca/en/public-health/services/diseases/heart-health/heart-attack.html#a6) - [Treating a heart attack](https://www.canada.ca/en/public-health/services/diseases/heart-health/heart-attack.html#a3) - [Preventing a heart attack](https://www.canada.ca/en/public-health/services/diseases/heart-health/heart-attack.html#a4) - [Effects of a heart attack](https://www.canada.ca/en/public-health/services/diseases/heart-health/heart-attack.html#a5) ## Causes of a heart attack A heart attack happens when an artery of the heart suddenly closes due to plaque build-up. Plaque is made of: - fats - calcium - cholesterol Blood clots (thickened blood) can also block your arteries. Arteries carry blood, oxygen and nutrients to your heart and the rest of your body. An artery of the heart can close as a result of plaque that has built up over time. This is known as a hardening of the arteries. When the artery closes, the supply of blood and oxygen to the heart suddenly decreases. This lack of oxygen causes damage to the heart. ## Symptoms of a heart attack The most common symptom of a heart attack in both males and females is chest pain or discomfort. Other symptoms of a heart attack include: - shortness of breath - pain that may spread: - from the chest area - down one or both arms - to the neck, jaw or shoulders - paleness, sweating or weakness - chest pain with possible feelings of: - fullness - burning - pressure - tightness - squeezing - heaviness - discomfort - crushing pain - nausea, vomiting and possible indigestion - anxiety or fear ### Symptoms experienced by females The most common heart attack sign is chest pain or discomfort. However, females can experience a heart attack without chest pressure. They may experience: - dizziness - extreme fatigue - nausea or vomiting - shortness of breath - upper back pressure - light-headedness or fainting - pressure or pain in the jaw, lower chest or upper abdomen They’re also more likely to feel some discomfort in the chest rather than a sharp pain or tightness. The milder symptoms don’t mean that a female's heart attack is any less severe than a male's heart attack. Take any symptoms of a heart attack seriously. ## If you have a heart attack If you have any symptoms of a heart attack: - tell someone and ask them to get help right away - call 9-1-1 or your local emergency number Not getting help for your symptoms can be fatal. The sooner you get help, the more likely you are to survive and recover without long-term effects. Half of heart attack deaths happen within 2 hours of the first signs. Many people find it hard to believe that they’re having a heart attack. They convince themselves that the symptoms are something else and that they will go away. #### If you’ve had a heart attack before If you’ve had a heart attack, having important health information close by can help medical staff treat you. Keep your personal health information easily accessible, such as on your phone or in your wallet. You may not be able to tell medical staff this information yourself, depending on your condition. Your list should include: - allergies - blood type - height and weight - name and address - age and birth date - medical conditions - emergency contacts - telephone and health insurance card number - medical history (including surgeries) - current medications (dosage and frequency) - health care provider (name and phone number) - health care plan benefit card for expenses that aren’t covered under provincial health insurance plans, such as: - ambulance services - prescription medication ## Treating a heart attack New therapies and drugs can reduce damage and save your life if heart attack treatment begins soon enough. Your health care provider will work with you to determine treatment and recovery needs. ## Preventing a heart attack There are many different ways to reduce your risk for heart attack and other heart-related conditions. These include: - eating a variety of healthy foods - being physically active regularly - maintaining a healthy weight - quitting (or not starting) smoking - avoiding use of recreational drugs - managing stress - limiting alcohol use - regularly monitoring your blood pressure If you’ve already had a heart attack or stroke, these changes can reduce the risk of having another. Learn more: - [Guidance for preventing heart disease](https://www.canada.ca/en/public-health/services/diseases/heart-health/heart-diseases-conditions/prevention-heart-diseases-conditions.html#guidance) - [High blood pressure (hypertension): Using an at-home blood pressure monitor](https://www.canada.ca/en/public-health/services/diseases/heart-health/high-blood-pressure.html#monitor) ## Effects of a heart attack Physical effects of a heart attack can include: - soreness - difficulty with strenuous activities, such as: - lifting heavy items - pushing or pulling actions that cause you to hold your breath - repetitive arm work like: - raking - digging - vacuuming - grass cutting - difficulty bathing or showering in very hot or cold water If you’ve had a heart attack, ask your health care provider about how to manage the resulting health effects. Other effects of a heart attack can include: - emotional difficulty, possibly leading to depression - pain or an increase in pain you already have - a return to hospital - loneliness - fatigue - death A heart attack may also lead to developing further heart diseases, such as heart failure or heart valve disorders. Learn more: - [Heart valve disorders](https://www.canada.ca/en/public-health/services/diseases/heart-health/heart-valve-disorders.html) - [Heart diseases and conditions](https://www.canada.ca/en/public-health/services/diseases.html?heart) ### Who is most at risk You’re at higher risk of heart diseases and conditions if you: - smoke - have high blood pressure (hypertension) - have high cholesterol and triglyceride levels - triglycerides are your body’s most common form of fat - live with diabetes - already have a blood clotting problem - are a male who is 45 years of age or older - are a female who is 55 years of age or older - are a female who had pre-eclampsia or gestational hypertension during pregnancy - pre-eclampsia is characterized by high blood pressure and significant amounts of protein in the urine during pregnancy or after giving birth Learn more: - [Diabetes](https://www.canada.ca/en/public-health/services/diseases/diabetes.html) - [High cholesterol](https://www.canada.ca/en/public-health/services/diseases/heart-health/high-cholesterol.html) - [Tobacco and stroke](https://www.canada.ca/en/health-canada/services/health-concerns/tobacco/legislation/tobacco-product-labelling/smoking-strokes.html) - [Tobacco and heart disease](https://www.canada.ca/en/health-canada/services/health-concerns/tobacco/legislation/tobacco-product-labelling/smoking-heart-disease.html) - [High blood pressure (hypertension)](https://www.canada.ca/en/public-health/services/diseases/heart-health/high-blood-pressure.html) - [Health effects of smoking and second-hand smoke](https://www.canada.ca/en/health-canada/services/smoking-tobacco/health-effects-smoking-second-hand-smoke.html) - [Gestational hypertension (Society of Obstetricians and Gynaecologists of Canada)](https://www.pregnancyinfo.ca/your-pregnancy/special-consideration/diabetes-and-hypertension/) ## Related links - [Heart diseases and conditions](https://www.canada.ca/en/public-health/services/diseases.html?heart) ### For professionals - [Heart disease: For health professionals](https://www.canada.ca/en/public-health/services/diseases/heart-health/heart-diseases-conditions/for-professionals-heart-diseases-conditions.html)
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