How Much Sleep Is Needed for Glymphatic Flow (Brain Cleaning)?

One function of sleep is the clearance of toxic waste byproducts through a newly discovered drainage system in the brain. Glymphatic brain filtration may help explain why those who routinely get fewer than seven hours of sleep a night are at increased risk of developing cognitive disorders, such as dementia.

In the next video, I share the best sleeping position for glymphatic flow ( ).

For how to sleep better in general, see How to Get a Good Night’s Sleep Without Sleeping Pills ( ).

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-Michael Greger, MD FACLM

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Dave McKinnon

  • @AlexofCharmCity says:

    So doesn’t answer how much sleep is needed and doesn’t say how to improve sleep to help the cleaning process at all. Title should be introduction about the glymphatic system.

    • @sevendeadlychins says:

      Based on your cranky response I can guarantee we need more sleep than you got last night.

    • @highimwolf says:

      ​@@sevendeadlychinsNot really the title was clickbait, that’s just a fact.

    • @xperience-evolution says:

      7 hours for the average person is best. He already has a Video and a Video Series about a Topic always starts with a Tilte like that. The Title is the introduction to a few Videos about it.

    • @sevendeadlychins says:

      @@highimwolfMore sleep for you too.

    • @CodyManners says:

      He’s just reading off research for ya
      Everyone varies but we know the general recommended amounts of sleep we should aim for. He also explains the risks of getting less than 7 hours of sleep so 7 hours is a good benchmark for most people.

  • @michelewilliams4485 says:

    I hate that we torture animals to learn these things 😢

    • @col8353 says:

      boo hoo.

    • @oskariKN25 says:

      @@col8353 Look I get it, you are young possibly teenager, edgy and believe empathy to be a weakness and such but as much as you might believe otherwise. Mocking someones saddened demeanor is not the tough guy act you think it is. Killing animals no matter how necessary it might be in your eyes does not make it something to not feel sad over. If kicking a puppy is not cool and acceptable (in normal social circumstances. unless you are someone heavily traumatized that disgusting behavior might to you be acceptable) then why would sleep depriving and killing mice be either?

  • @Alexander-ok7fm says:

    Very interessting! Trank YouTube 😊

  • @highimwolf says:

    I wonder how people that can sleep no more than 4 hours or sometimes less/none and still feel rested(not need more sleep) if those small tubes that carry away brain toxins operate more efficiently at night or they operate during the day or how that works. There must be something genetic to it(im not counting workaholics who choose to get 4 hours of sleep).

  • @pickledbeaker5916 says:

    ah ye, another cliff hanger to sleep on

  • @JoJo-yp7kw says:

    How do we counter this age related glymphatic decline? Let me guess…beans beans beans and greens greens greens. Haha.

  • @duenben says:

    Glad to have a child so there is not much sleep at all

  • @doloreswinsbarrow1110 says:

    Thanks for the insight on the brain.

  • @baileystruss7319 says:

    There is a detailed study showing that yogic breathing activates this same glymphatic activity. Basically slow deep diaphragm and abdominal breathing.

  • @udden82 says:

    Drinking water! U r welcome

  • @jodieroberts7882 says:

    A cliff hanger for sure!

  • @davidlist7507 says:

    What if use Benozo’s to sleep like I do?

  • @gfrozin says:

    A much better title for this video would be: what is the glymphatic system? But I guess even health education videos are a victim of the algorithms and have to do clickbaity titles 😂

  • @PlantBasedPrimary says:

    Your lecture in Oregon last night was top notch! Thank you for your tireless work to educate the masses about the power we have over our health outcomes! 💚🙌✨

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