🕷️ Crawler Inspector

URL Lookup

Direct Parameter Lookup

Raw Queries and Responses

1. Shard Calculation

Query:

Response:

Calculated Shard: 44 (from laksa124)

2. Crawled Status Check

Query:

curl -X POST \
  'http://laksa044.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://news.llu.edu/health-wellness/why-can-covid-19-cause-brain-fog\')), getAhrefsUnparsedNoserviceFromURL(\'https://news.llu.edu/health-wellness/why-can-covid-19-cause-brain-fog\'))) FORMAT JSONEachRow'

Response:

{"found_url":"https:\/\/news.llu.edu\/health-wellness\/why-can-covid-19-cause-brain-fog","crawl_time":1775903857,"first_indexed_time":1610147859,"http_code":200,"src_unparsed":"edu,llu!news,\/health-wellness\/why-can-covid-19-cause-brain-fog s443","src_root_hash":"10397796416055607844","history_drop_reason":null,"meta_title":"Why can COVID-19 cause brain fog? | News","meta_descriptions":["Neurosurgeon answers questions on cognitive impairment post-COVID-19"],"attrs_boilerpipe_text":"After nearly a year of dealing with COVID-19, more data has emerged surrounding the virus and its symptoms. COVID-19 was initially considered a respiratory virus, but the impact on other body symptoms — including the brain — quickly surfaced, creating concerns of long-term effects.\nJustin Dye, MD\n, a neurosurgeon at Loma Linda University Health, says brain fog, anxiety, or dizziness may be an indication of an impact on mental health. “When I think about brain fog, I often think about the mental health aspect of it, which is the secondary health pandemic we’re currently facing,” Dye says. “New stressors at work, home, in school, or in social circles are impacting people who haven’t necessarily had COVID-19.”\nThat doesn’t necessarily mean COVID-19 can’t cause the brain fog, but it’s not the only possibility, he says. “Mental health and brain health go hand-in-hand, and people who don’t feel like themselves after going through COVID-19, or another significant virus, have been through something traumatic that puts a strain on many of their body’s systems.”\nWhat is brain fog?\nClinicians have seen lingering mental fog in those who have had COVID-19. This fog has included neurological symptoms such as headache, fatigue, memory loss, confusion, difficulty focusing, and dizziness. “These cognitive symptoms accompanying the coronavirus, and other viruses, have been appointed the name brain fog.”\nWhat causes it?\nIn some patients, COVID-19 can impact the memory pathways, cause stroke, or reduce blood flow to the brain, Dye says. These symptoms may be due to the immune system’s response rather than the virus itself.\n“Inflammation can impact the immune system and the nervous system, impacting our neurological framework in ways we’re still trying to understand,” he says.\nWhat are the long-term implications?\nDye says the medical community doesn’t know brain fog’s long-term effect, but symptoms don’t necessarily mean the future development of dementia or a memory disorder down the road. \"Symptoms of anxiety, dizziness or memory changes should not be ignored,\" he says. \"Anyone experiencing these symptoms should seek medical advice. However, the presence of these symptoms does not necessarily mean permanent changes in the brain.\n“Clinicians and researchers are collecting data and monitoring these cases, making sure we’re able to treat our patients with the most current information and provide the best outcomes possible,” Dye says.\nIf you or someone you love is interested in learning more about COVID-19, visit our \ncoronavirus information webpage\n. To learn more about the COVID-19 vaccine, check out \nthis article\n on your biggest COVID-19 vaccine questions, or visit our \nCOVID-19 vaccines webpage","attrs_markdown":"[Skip to main content](https:\/\/news.llu.edu\/health-wellness\/why-can-covid-19-cause-brain-fog#main-content)\n\n## Secondary Navigation\n[University](https:\/\/llu.edu\/)\n\n[Healthcare](https:\/\/lluh.org\/)\n\n## Utility Navigation\n[About LLU](https:\/\/llu.edu\/about-llu)\n\n[Find a Program](https:\/\/llu.edu\/programs)\n\n[Give](https:\/\/lluh.org\/giving)\n\n[Jobs](https:\/\/jobs.lluh.org\/)\n\nSearch Site\n\nMenu\n\n[![News](https:\/\/news.llu.edu\/sites\/news.llu.edu\/files\/logo.png)](https:\/\/news.llu.edu\/)\n\n[![News](https:\/\/news.llu.edu\/sites\/news.llu.edu\/files\/logo.png)](https:\/\/news.llu.edu\/)\n\n## Site Navigation\n[News](https:\/\/news.llu.edu\/)\n\n[Publications](https:\/\/news.llu.edu\/publications)\n\n[For Journalists](https:\/\/news.llu.edu\/journalists)\n\n[Media Coverage](https:\/\/news.llu.edu\/media-coverage)\n\n## Utility Navigation\n[About LLU](https:\/\/llu.edu\/about-llu)\n\n[Find a Program](https:\/\/llu.edu\/programs)\n\n[Give](https:\/\/lluh.org\/giving)\n\n[Jobs](https:\/\/jobs.lluh.org\/)\n\nSearch Site\n\n[Home](https:\/\/news.llu.edu\/)\n\n[Health & Wellness](https:\/\/news.llu.edu\/health-wellness)\n\nWhy can COVID-19 cause brain fog?\n# Why can COVID-19 cause brain fog?\nBy Janelle Ringer - January 8, 2021\n\n![Brain fog](https:\/\/news.llu.edu\/sites\/news.llu.edu\/files\/styles\/crop_featured_image\/public\/istock-1224777649web.jpg?itok=_4SBUZ6x)\n\nBrain fog\n\nAfter nearly a year of dealing with COVID-19, more data has emerged surrounding the virus and its symptoms. COVID-19 was initially considered a respiratory virus, but the impact on other body symptoms — including the brain — quickly surfaced, creating concerns of long-term effects.\n\n[Justin Dye, MD](https:\/\/lluh.org\/provider\/dye-justin), a neurosurgeon at Loma Linda University Health, says brain fog, anxiety, or dizziness may be an indication of an impact on mental health. “When I think about brain fog, I often think about the mental health aspect of it, which is the secondary health pandemic we’re currently facing,” Dye says. “New stressors at work, home, in school, or in social circles are impacting people who haven’t necessarily had COVID-19.”\n\nThat doesn’t necessarily mean COVID-19 can’t cause the brain fog, but it’s not the only possibility, he says. “Mental health and brain health go hand-in-hand, and people who don’t feel like themselves after going through COVID-19, or another significant virus, have been through something traumatic that puts a strain on many of their body’s systems.”\n\n## What is brain fog?\nClinicians have seen lingering mental fog in those who have had COVID-19. This fog has included neurological symptoms such as headache, fatigue, memory loss, confusion, difficulty focusing, and dizziness. “These cognitive symptoms accompanying the coronavirus, and other viruses, have been appointed the name brain fog.”\n\n## What causes it?\nIn some patients, COVID-19 can impact the memory pathways, cause stroke, or reduce blood flow to the brain, Dye says. These symptoms may be due to the immune system’s response rather than the virus itself.\n\n“Inflammation can impact the immune system and the nervous system, impacting our neurological framework in ways we’re still trying to understand,” he says.\n\n## What are the long-term implications?\nDye says the medical community doesn’t know brain fog’s long-term effect, but symptoms don’t necessarily mean the future development of dementia or a memory disorder down the road. \"Symptoms of anxiety, dizziness or memory changes should not be ignored,\" he says. \"Anyone experiencing these symptoms should seek medical advice. However, the presence of these symptoms does not necessarily mean permanent changes in the brain.\n\n“Clinicians and researchers are collecting data and monitoring these cases, making sure we’re able to treat our patients with the most current information and provide the best outcomes possible,” Dye says.\n\nIf you or someone you love is interested in learning more about COVID-19, visit our [coronavirus information webpage](https:\/\/lluh.org\/patients-visitors\/health-wellness\/coronavirus-information-and-updates). To learn more about the COVID-19 vaccine, check out [this article](https:\/\/news.llu.edu\/health-wellness\/your-biggest-covid-19-vaccine-questions-answered) on your biggest COVID-19 vaccine questions, or visit our [COVID-19 vaccines webpage](https:\/\/lluh.org\/patients-visitors\/health-wellness\/coronavirus-information-and-updates\/covid-19-vaccines)\n\n#### Featured Topics\n[Academics](https:\/\/news.llu.edu\/academics) [Community](https:\/\/news.llu.edu\/community) [Health & Wellness](https:\/\/news.llu.edu\/health-wellness) [Patient Care](https:\/\/news.llu.edu\/patient-care) [Research](https:\/\/news.llu.edu\/research) [Spiritual Life & Wholeness](https:\/\/news.llu.edu\/spiritual-life-wholeness)\n\n[Small Gifts. Big Difference.](https:\/\/lluh.org\/giving\/make-gift-today?os_campaign=giving&os_component=sidebar&os_source=llu-news-site)\n\n[Small Gifts. Big Difference.](https:\/\/lluh.org\/giving\/make-gift-today?os_campaign=giving&os_component=sidebar&os_source=llu-news-site)\n\nEven a small monthly gift of just \\$10 can create hope and healing for children and families. Join us in making a lasting impact.\n\n[Start Giving Now](https:\/\/lluh.org\/giving\/make-gift-today?os_campaign=giving&os_component=sidebar&os_source=llu-news-site)\n\n[![News](https:\/\/news.llu.edu\/sites\/news.llu.edu\/files\/logo.png)](https:\/\/news.llu.edu\/)\n\nA Seventh-day Adventist Organization\n\nA Seventh-day Adventist Organization\n\n[Facebook](https:\/\/www.facebook.com\/LLUHealth)   [Instagram](https:\/\/instagram.com\/LLUHealth)   [Twitter](https:\/\/twitter.com\/LLUHealth)   [LinkedIn](https:\/\/www.linkedin.com\/company\/loma-linda-university)   [YouTube](https:\/\/www.youtube.com\/lluhealth)\n\nLoma Linda University Health\n\nLoma Linda, CA. 92350 [909-558-1000](tel:9095581000)\n\n## Resources\n[Alumni](https:\/\/llu.edu\/alumni)\n\n[Current Students](https:\/\/llu.edu\/campus-spiritual-life\/student-services)\n\n[Campus Directory](https:\/\/llu.edu\/about-llu\/offices-and-services-directory)\n\n[Libraries](https:\/\/library.llu.edu\/)\n\n[Canvas](https:\/\/llu.instructure.com\/)\n\n[MyLLU](https:\/\/myllu.llu.edu\/home\/)\n\n[WebMail](https:\/\/webmail.llu.edu\/)\n\n## Schools\n[School of Allied Health Professions](https:\/\/alliedhealth.llu.edu\/)\n\n[School of Behavioral Health](https:\/\/behavioralhealth.llu.edu\/)\n\n[School of Dentistry](https:\/\/dentistry.llu.edu\/)\n\n[School of Medicine](https:\/\/medicine.llu.edu\/)\n\n[School of Nursing](https:\/\/nursing.llu.edu\/)\n\n[School of Pharmacy](https:\/\/pharmacy.llu.edu\/)\n\n[School of Public Health](https:\/\/publichealth.llu.edu\/)\n\n[School of Religion](https:\/\/religion.llu.edu\/)\n\n[Jobs](https:\/\/jobs.lluh.org\/)\n\n[Volunteer](https:\/\/llu.samaritan.com\/)\n\n[Giving](https:\/\/lluh.org\/giving)\n\n[Emergency](https:\/\/llu.edu\/campus-spiritual-life\/emergency)\n\n[Title IX Notice](https:\/\/llu.edu\/about-llu\/policies\/sex-discrimination-sexual-misconduct-title-ix)\n\n[Non-Discrimination Policy](https:\/\/llu.edu\/about-llu\/policies\/non-discrimination-policy)\n\n[Privacy Information](https:\/\/lluh.org\/privacy)\n\n© 2026 Loma Linda University Health","attrs_readable_markdown":"After nearly a year of dealing with COVID-19, more data has emerged surrounding the virus and its symptoms. COVID-19 was initially considered a respiratory virus, but the impact on other body symptoms — including the brain — quickly surfaced, creating concerns of long-term effects.\n\n[Justin Dye, MD](https:\/\/lluh.org\/provider\/dye-justin), a neurosurgeon at Loma Linda University Health, says brain fog, anxiety, or dizziness may be an indication of an impact on mental health. “When I think about brain fog, I often think about the mental health aspect of it, which is the secondary health pandemic we’re currently facing,” Dye says. “New stressors at work, home, in school, or in social circles are impacting people who haven’t necessarily had COVID-19.”\n\nThat doesn’t necessarily mean COVID-19 can’t cause the brain fog, but it’s not the only possibility, he says. “Mental health and brain health go hand-in-hand, and people who don’t feel like themselves after going through COVID-19, or another significant virus, have been through something traumatic that puts a strain on many of their body’s systems.”\n\n## What is brain fog?\nClinicians have seen lingering mental fog in those who have had COVID-19. This fog has included neurological symptoms such as headache, fatigue, memory loss, confusion, difficulty focusing, and dizziness. “These cognitive symptoms accompanying the coronavirus, and other viruses, have been appointed the name brain fog.”\n\n## What causes it?\nIn some patients, COVID-19 can impact the memory pathways, cause stroke, or reduce blood flow to the brain, Dye says. These symptoms may be due to the immune system’s response rather than the virus itself.\n\n“Inflammation can impact the immune system and the nervous system, impacting our neurological framework in ways we’re still trying to understand,” he says.\n\n## What are the long-term implications?\nDye says the medical community doesn’t know brain fog’s long-term effect, but symptoms don’t necessarily mean the future development of dementia or a memory disorder down the road. \"Symptoms of anxiety, dizziness or memory changes should not be ignored,\" he says. \"Anyone experiencing these symptoms should seek medical advice. However, the presence of these symptoms does not necessarily mean permanent changes in the brain.\n\n“Clinicians and researchers are collecting data and monitoring these cases, making sure we’re able to treat our patients with the most current information and provide the best outcomes possible,” Dye says.\n\nIf you or someone you love is interested in learning more about COVID-19, visit our [coronavirus information webpage](https:\/\/lluh.org\/patients-visitors\/health-wellness\/coronavirus-information-and-updates). To learn more about the COVID-19 vaccine, check out [this article](https:\/\/news.llu.edu\/health-wellness\/your-biggest-covid-19-vaccine-questions-answered) on your biggest COVID-19 vaccine questions, or visit our [COVID-19 vaccines webpage](https:\/\/lluh.org\/patients-visitors\/health-wellness\/coronavirus-information-and-updates\/covid-19-vaccines)","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

3 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://news.llu.edu/health-wellness/why-can-covid-19-cause-brain-fog
Last Crawled	2026-04-11 10:37:37 (3 days ago)
First Indexed	2021-01-08 23:17:39 (5 years ago)
HTTP Status Code	200
Meta Title	Why can COVID-19 cause brain fog? \| News
Meta Description	Neurosurgeon answers questions on cognitive impairment post-COVID-19
Meta Canonical	null
Boilerpipe Text	After nearly a year of dealing with COVID-19, more data has emerged surrounding the virus and its symptoms. COVID-19 was initially considered a respiratory virus, but the impact on other body symptoms — including the brain — quickly surfaced, creating concerns of long-term effects. Justin Dye, MD , a neurosurgeon at Loma Linda University Health, says brain fog, anxiety, or dizziness may be an indication of an impact on mental health. “When I think about brain fog, I often think about the mental health aspect of it, which is the secondary health pandemic we’re currently facing,” Dye says. “New stressors at work, home, in school, or in social circles are impacting people who haven’t necessarily had COVID-19.” That doesn’t necessarily mean COVID-19 can’t cause the brain fog, but it’s not the only possibility, he says. “Mental health and brain health go hand-in-hand, and people who don’t feel like themselves after going through COVID-19, or another significant virus, have been through something traumatic that puts a strain on many of their body’s systems.” What is brain fog? Clinicians have seen lingering mental fog in those who have had COVID-19. This fog has included neurological symptoms such as headache, fatigue, memory loss, confusion, difficulty focusing, and dizziness. “These cognitive symptoms accompanying the coronavirus, and other viruses, have been appointed the name brain fog.” What causes it? In some patients, COVID-19 can impact the memory pathways, cause stroke, or reduce blood flow to the brain, Dye says. These symptoms may be due to the immune system’s response rather than the virus itself. “Inflammation can impact the immune system and the nervous system, impacting our neurological framework in ways we’re still trying to understand,” he says. What are the long-term implications? Dye says the medical community doesn’t know brain fog’s long-term effect, but symptoms don’t necessarily mean the future development of dementia or a memory disorder down the road. "Symptoms of anxiety, dizziness or memory changes should not be ignored," he says. "Anyone experiencing these symptoms should seek medical advice. However, the presence of these symptoms does not necessarily mean permanent changes in the brain. “Clinicians and researchers are collecting data and monitoring these cases, making sure we’re able to treat our patients with the most current information and provide the best outcomes possible,” Dye says. If you or someone you love is interested in learning more about COVID-19, visit our coronavirus information webpage . To learn more about the COVID-19 vaccine, check out this article on your biggest COVID-19 vaccine questions, or visit our COVID-19 vaccines webpage
Markdown	[Skip to main content](https://news.llu.edu/health-wellness/why-can-covid-19-cause-brain-fog#main-content) ## Secondary Navigation [University](https://llu.edu/) [Healthcare](https://lluh.org/) ## Utility Navigation [About LLU](https://llu.edu/about-llu) [Find a Program](https://llu.edu/programs) [Give](https://lluh.org/giving) [Jobs](https://jobs.lluh.org/) Search Site Menu [![News](https://news.llu.edu/sites/news.llu.edu/files/logo.png)](https://news.llu.edu/) [![News](https://news.llu.edu/sites/news.llu.edu/files/logo.png)](https://news.llu.edu/) ## Site Navigation [News](https://news.llu.edu/) [Publications](https://news.llu.edu/publications) [For Journalists](https://news.llu.edu/journalists) [Media Coverage](https://news.llu.edu/media-coverage) ## Utility Navigation [About LLU](https://llu.edu/about-llu) [Find a Program](https://llu.edu/programs) [Give](https://lluh.org/giving) [Jobs](https://jobs.lluh.org/) Search Site [Home](https://news.llu.edu/) [Health & Wellness](https://news.llu.edu/health-wellness) Why can COVID-19 cause brain fog? # Why can COVID-19 cause brain fog? By Janelle Ringer - January 8, 2021 ![Brain fog](https://news.llu.edu/sites/news.llu.edu/files/styles/crop_featured_image/public/istock-1224777649web.jpg?itok=_4SBUZ6x) Brain fog After nearly a year of dealing with COVID-19, more data has emerged surrounding the virus and its symptoms. COVID-19 was initially considered a respiratory virus, but the impact on other body symptoms — including the brain — quickly surfaced, creating concerns of long-term effects. [Justin Dye, MD](https://lluh.org/provider/dye-justin), a neurosurgeon at Loma Linda University Health, says brain fog, anxiety, or dizziness may be an indication of an impact on mental health. “When I think about brain fog, I often think about the mental health aspect of it, which is the secondary health pandemic we’re currently facing,” Dye says. “New stressors at work, home, in school, or in social circles are impacting people who haven’t necessarily had COVID-19.” That doesn’t necessarily mean COVID-19 can’t cause the brain fog, but it’s not the only possibility, he says. “Mental health and brain health go hand-in-hand, and people who don’t feel like themselves after going through COVID-19, or another significant virus, have been through something traumatic that puts a strain on many of their body’s systems.” ## What is brain fog? Clinicians have seen lingering mental fog in those who have had COVID-19. This fog has included neurological symptoms such as headache, fatigue, memory loss, confusion, difficulty focusing, and dizziness. “These cognitive symptoms accompanying the coronavirus, and other viruses, have been appointed the name brain fog.” ## What causes it? In some patients, COVID-19 can impact the memory pathways, cause stroke, or reduce blood flow to the brain, Dye says. These symptoms may be due to the immune system’s response rather than the virus itself. “Inflammation can impact the immune system and the nervous system, impacting our neurological framework in ways we’re still trying to understand,” he says. ## What are the long-term implications? Dye says the medical community doesn’t know brain fog’s long-term effect, but symptoms don’t necessarily mean the future development of dementia or a memory disorder down the road. "Symptoms of anxiety, dizziness or memory changes should not be ignored," he says. "Anyone experiencing these symptoms should seek medical advice. However, the presence of these symptoms does not necessarily mean permanent changes in the brain. “Clinicians and researchers are collecting data and monitoring these cases, making sure we’re able to treat our patients with the most current information and provide the best outcomes possible,” Dye says. If you or someone you love is interested in learning more about COVID-19, visit our [coronavirus information webpage](https://lluh.org/patients-visitors/health-wellness/coronavirus-information-and-updates). To learn more about the COVID-19 vaccine, check out [this article](https://news.llu.edu/health-wellness/your-biggest-covid-19-vaccine-questions-answered) on your biggest COVID-19 vaccine questions, or visit our [COVID-19 vaccines webpage](https://lluh.org/patients-visitors/health-wellness/coronavirus-information-and-updates/covid-19-vaccines) #### Featured Topics [Academics](https://news.llu.edu/academics) [Community](https://news.llu.edu/community) [Health & Wellness](https://news.llu.edu/health-wellness) [Patient Care](https://news.llu.edu/patient-care) [Research](https://news.llu.edu/research) [Spiritual Life & Wholeness](https://news.llu.edu/spiritual-life-wholeness) [Small Gifts. Big Difference.](https://lluh.org/giving/make-gift-today?os_campaign=giving&os_component=sidebar&os_source=llu-news-site) [Small Gifts. Big Difference.](https://lluh.org/giving/make-gift-today?os_campaign=giving&os_component=sidebar&os_source=llu-news-site) Even a small monthly gift of just \$10 can create hope and healing for children and families. Join us in making a lasting impact. [Start Giving Now](https://lluh.org/giving/make-gift-today?os_campaign=giving&os_component=sidebar&os_source=llu-news-site) [![News](https://news.llu.edu/sites/news.llu.edu/files/logo.png)](https://news.llu.edu/) A Seventh-day Adventist Organization A Seventh-day Adventist Organization [Facebook](https://www.facebook.com/LLUHealth) [Instagram](https://instagram.com/LLUHealth) [Twitter](https://twitter.com/LLUHealth) [LinkedIn](https://www.linkedin.com/company/loma-linda-university) [YouTube](https://www.youtube.com/lluhealth) Loma Linda University Health Loma Linda, CA. 92350 [909-558-1000](tel:9095581000) ## Resources [Alumni](https://llu.edu/alumni) [Current Students](https://llu.edu/campus-spiritual-life/student-services) [Campus Directory](https://llu.edu/about-llu/offices-and-services-directory) [Libraries](https://library.llu.edu/) [Canvas](https://llu.instructure.com/) [MyLLU](https://myllu.llu.edu/home/) [WebMail](https://webmail.llu.edu/) ## Schools [School of Allied Health Professions](https://alliedhealth.llu.edu/) [School of Behavioral Health](https://behavioralhealth.llu.edu/) [School of Dentistry](https://dentistry.llu.edu/) [School of Medicine](https://medicine.llu.edu/) [School of Nursing](https://nursing.llu.edu/) [School of Pharmacy](https://pharmacy.llu.edu/) [School of Public Health](https://publichealth.llu.edu/) [School of Religion](https://religion.llu.edu/) [Jobs](https://jobs.lluh.org/) [Volunteer](https://llu.samaritan.com/) [Giving](https://lluh.org/giving) [Emergency](https://llu.edu/campus-spiritual-life/emergency) [Title IX Notice](https://llu.edu/about-llu/policies/sex-discrimination-sexual-misconduct-title-ix) [Non-Discrimination Policy](https://llu.edu/about-llu/policies/non-discrimination-policy) [Privacy Information](https://lluh.org/privacy) © 2026 Loma Linda University Health
Readable Markdown	After nearly a year of dealing with COVID-19, more data has emerged surrounding the virus and its symptoms. COVID-19 was initially considered a respiratory virus, but the impact on other body symptoms — including the brain — quickly surfaced, creating concerns of long-term effects. [Justin Dye, MD](https://lluh.org/provider/dye-justin), a neurosurgeon at Loma Linda University Health, says brain fog, anxiety, or dizziness may be an indication of an impact on mental health. “When I think about brain fog, I often think about the mental health aspect of it, which is the secondary health pandemic we’re currently facing,” Dye says. “New stressors at work, home, in school, or in social circles are impacting people who haven’t necessarily had COVID-19.” That doesn’t necessarily mean COVID-19 can’t cause the brain fog, but it’s not the only possibility, he says. “Mental health and brain health go hand-in-hand, and people who don’t feel like themselves after going through COVID-19, or another significant virus, have been through something traumatic that puts a strain on many of their body’s systems.” ## What is brain fog? Clinicians have seen lingering mental fog in those who have had COVID-19. This fog has included neurological symptoms such as headache, fatigue, memory loss, confusion, difficulty focusing, and dizziness. “These cognitive symptoms accompanying the coronavirus, and other viruses, have been appointed the name brain fog.” ## What causes it? In some patients, COVID-19 can impact the memory pathways, cause stroke, or reduce blood flow to the brain, Dye says. These symptoms may be due to the immune system’s response rather than the virus itself. “Inflammation can impact the immune system and the nervous system, impacting our neurological framework in ways we’re still trying to understand,” he says. ## What are the long-term implications? Dye says the medical community doesn’t know brain fog’s long-term effect, but symptoms don’t necessarily mean the future development of dementia or a memory disorder down the road. "Symptoms of anxiety, dizziness or memory changes should not be ignored," he says. "Anyone experiencing these symptoms should seek medical advice. However, the presence of these symptoms does not necessarily mean permanent changes in the brain. “Clinicians and researchers are collecting data and monitoring these cases, making sure we’re able to treat our patients with the most current information and provide the best outcomes possible,” Dye says. If you or someone you love is interested in learning more about COVID-19, visit our [coronavirus information webpage](https://lluh.org/patients-visitors/health-wellness/coronavirus-information-and-updates). To learn more about the COVID-19 vaccine, check out [this article](https://news.llu.edu/health-wellness/your-biggest-covid-19-vaccine-questions-answered) on your biggest COVID-19 vaccine questions, or visit our [COVID-19 vaccines webpage](https://lluh.org/patients-visitors/health-wellness/coronavirus-information-and-updates/covid-19-vaccines)
Shard	44 (laksa)
Root Hash	10397796416055607844
Unparsed URL	edu,llu!news,/health-wellness/why-can-covid-19-cause-brain-fog s443