Wow! Thank you. My mother suffered from insomina almost her entire life. And in her early 50's developed Alzheimers. She also suffered from a variety of mental illnesses in her lifetime. She rarely slept. This shed a new light on the subject.

My cat has a very clean brain.

Shout out to the guy who fell asleep in the audience

"early to bed, early to rise, makes a man healthy, wealthy and wise." -B. Franklin

I doubt I'm the only person watching this at 2 AM...instead of sleeping

This video shows a lot of insight on the most complicated human organ. As a college student who gets very little sleep, this video is eye opening to see how much sleep the brain needs. When the body is awake, the brain is demanding energy and blood supplies. We have been told that sleep helps store memory, but now science has showed how the brain cleans itself. I think to have a normal function and a clearer mind, the body needs sleep so the brain can begin another day. With little sleep, it is hard to be focused. As I received maybe only 4 hours of sleep last night, I walk around campus today like a zombie who feels drowsy. This discovery in science has told scientists a lot about the unknown brain. I think sleep is even more important than scientists ever thought. If sleep will help prevent diseases, then that would be a break through in science. It makes sense...if sleep helps erase the waste, then no sleep leads to a back up of waste. Mental diseases could develop from this and its a theory that seems to be leading scientists down the right path. Sleep is so important to the brain and body and needs to be a priority in my opinion.

Brain is explaining about itself the important of sleep

Chronic lack of sleep, chronic foods that cause inflammation and lack of nutrients. I bet these two play huge factors in why SO MANY people develop anxiety these years.

I found this not only helpful but exciting. I love having a good night’s sleep. I need 7 hours exactly and i don’t even have an alarm set. I am most creative after a good night’s sleep. Isn’t it amazing how we once again find another facet of God’s divine creation!

This is such an inspiring study , I can't believe how many times I rewatched this talk since last year , I mentioned these informations in my presentation about Alzheimer's disease in med school , thanks Dr Jeff 😉 I hope one day I will be able to do some great works in neuroscience just like this one

Keep the sleep videos coming, it's importance never seems to stick with me.

This is also making me think about the positive impact of powernaps or quick sleep (15-20min). Imagine you "clearing" your brain one or two times a day by a quick nap and then a solid night sleep. That should get the brain even healthier and more responsive. I'm really inspired right now but at the same time my brain is giving me obvious signs on the need of a real "clearing". Goodnight.

Kinda ironic watching this at 2am

Outstanding lecture! Thanks to scientists like Jeff, we we are being lifted out of ignorance of our universe and to ourselves into an enlightened state of being. That is a greater degree of consciousness. Thanks Jeff.

And people make fun of me for sleeping 8-10h a day... I'll be laughing when you can't remember your own name!

This is my first time watching this TED talk. This is now one of my favorite talks. It is so insightful, informative, and entertaining.

Most underrated TED talk in regard to actual consequences for everyones life. Good sleep is the most important factor for health, affect/mood, cognitive functions etc.

whelp.. time to send this to ALL my college professors when i pass out in class.

The discovery that Jeff explains in this video is one of true hope. People in the healthcare system don't always take the time to figure out why something happens or how something happens they just accept that it does and move on. If we could take the time to learn what is going on and learn why these things are occurring we could possibly prevent common diseases like this in the future. All too often, doctors jump to medication thinking that it is the only answer for the diagnosis, but what if they took the time to understand the mechanisms behind it? Would that change the way they plan to treat the patient? I think our healthcare system needs to operate like this more often. There are many diseases that are well known and the issues causing them are as well. But, what if we studied other diseases to try and get a better understanding and possibly find a treatment that works even better than the medication that was previously used. I find that pills and capsuled medications are becoming more and more popular and are used almost every time someone goes to the doctor when their could be a better alternatives somewhere that is yet to be discovered or is not that well known. I hope that research like this continues and is expanded to other diseases to inform people about what is happening and how to prevent it.

Nice to see someone who didn't overload us with examples and analogies and stuck to just one

Very good presentation: Clear and concise and leaving the viewer with just enough information that can be remembered. 6/2019

As a Muslim girl, I was struck by how this lecturer is fascinated by the mechanism of the brain’s work and the accuracy in its manufacture and creation.. I would like to tell him that this beauty, science and accuracy in making, came from the Great Allah who created us and created. everything with great precision and wisdom, the Almighty. سبحان الله العظيم خالق كل شيء ✨.

Now if only I actually could get a good night's sleep.

absolutely INCREDIBLE video!!! Explains why people have "breakthrough thinking" in their early morning hours (Hour of Power)...avoid brain clog....go to bed earlier it all catches up to us.... all this in 11 minutes... THIS GUY WAS GOOOOOD

I have been very unstable lately due to not getting sleep. Thanks Ted for making me understand maybe why that is.

Great presentation! I started cringing towards the end as I realized how little I sleep compared to how much I should sleep.

Great talk, the way he presented the story and conclusion was incredible. It's always inspiring to see smart people on stage.

This explains why so many sleep deprived people suffer from stress and depression. A lack of sleep can lead to anxiety and even diabetes. Rather worrying in this age of 24/7 “entertainment”.

I wish he addressed when was the best time to go to sleep and wake for optimal brain health. Great presentation. I get good sleep, but this reinforces good habits over bad. After reading some comments, the idea of insomnia sounds terrifying. Not being able to sleep. Scary.

When binging on KZfaq videos when I should be sleeping, I watch videos about the importance of sleep. It gets me to go to sleep very quickly. 👍👍

God is absolutely amazing! Designing our bodies for work, the rhythms of day and night for work and rest, and actually granting us refreshment when we sleep through the maintenance of our brains! Glory be to the Father, to Jesus Christ, and to the Holy Spirit, one God in three persons; blessed Trinity!

قال تعالى:- ( وَجَعَلْنَا الليل لِبَاساً . وَجَعَلْنَا النهار مَعَاشاً )

Please recommend these earlier in the day, KZfaq. Otherwise I end up watching these at midnight.

When you have an assignment to submit the next day, and writing a summary about this video happens to be the assignment. Mind you, it's 3 am and I'm going stay up late finishing this off. FML.

grazie mille per la traduzione, per settimane ho faticato nella traduzione e ora ho colmato le lacune, grazie mille

I'm curious if and how this discovery will impact our understanding of migraines. Perhaps there is a type of waste not being cleared, or CSF is pushing on the brain while awake, like a leaky pipe. Also, which cleaning system evolved first, lymph or glymph? VERY nice work. I appreciate the love, thought and thousands of hours which go into this exciting research!

beautiful talk, there is so much more to learn about our own bodies.

Super fascinating, concise and also easy to make sense of for a non scientist. Thank you!

Jeff, you're an excellent educator!

I've read the UC Berkeley news last year about their findings that poor sleep can lead to dementia. Listening to Jiff, it all makes sense to me. Here's an except of UC Berkeley article: “Our findings reveal a new pathway through which Alzheimer’s disease may cause memory decline later in life,” said UC Berkeley neuroscience professor Matthew Walker, senior author of the study published today in the journal Nature Neuroscience. Additionally, I've watched Dave Asprey's recent videos in his KZfaq's Bulletproof channel talking about sleep quality, which he also talked about the glymphatic system.

So clearly explained and exciting to see what's going on when we sleep 👌🏻

Important for kids ,students, young people or less young....to get a good sleep !! All of us need a good sleep, also for so many other reasons !!.... Great job.

Hmm.. its 3AM and I'm watching this

I am currently sleeping less than 3 to 4 hours a night, I get into a position of spine decompression, I also have a pad and pillow that has a kind of acupressure and am currently devoting time to a hyperbaric chamber/Float therapy box that also does self hypnosis that would include topical nutrients in mass amounts of anti oxide to help my fluid last longer without recharge, and treatment for our skin based on known bloodlevels of healthy skin's with nutritional content.

I have liked the way he has explained processes in the brain!

Now, this is what I'm talking about. This is an exceptional TED talk, not like that new-agy crap they've been posting lately.

What a beautiful laid out explanation

This is one of the best videos ive watched. period. well done

This talk has literally put me to sleep ;)

Watching this at 3:30 AM so that I can motivate myself to sleep

While listening the one of the old Greek physician's ideas presented in this talk, i was thinking that may be we should introduce something like Bonferroni correction for Multiple Hypothesis Matching... given enough crazy thinkers, there will always be one whose ideas will fall in line with current scientific paradigm ;)

Can you do the same research with meditative brain. Because when we sleep our brain is at rest, and while meditating brain and mind is at rest. It would be great if that resesrch can be done on meditation .

We don’t get enough solid sleep. Part of the reason is stimulants like caffeine in coffee or other drinks, and TV. It’s amazing to watch others at work having trouble staying awake. I’ll be the first to admit to having been a TV addict. Now I’m a KZfaq addict. But I do listen to audio books and read real books.

I'm about to take a 2-3 hour nap after watching this.

I doubt I'm The only person watching this at 1:45 AM ....... Instead of sleeping

Can the "I need 7 to 8 hours of sleep" ad stop like kdlalxkkajyja I get it on every single video I watch

Woah, talk about a wake call!

Clever design. Thank you Jesus!

Great TED Talk. I learned a lot. Thank you!

This new discovery is really fascinating. It might lead to new treatments for brain diseases. Ted talk is one of the best of all out there.

I'm watching this when I should be reading for college. Well, the topics kinda line up, so it works.

Sleep, like time, are the most important things we have to maintain ourselves. If we lost out on it, we can never recover it

Watching this damn well knowing I‘ll only get 4 hours of sleep.

One problem I see with his explanation is that he says the CSF only floods during periods where the brain is at its most inactive, but the human brain is even more active in REM sleep than it is during consciousness. How does he account for this apparent discrepancy?

It seems a bit odd how this guy's talking about one of the more interesting enigmas of the human body uncovered in recent history, and when the camera pans over to the audience they look like they couldn't be paid to give a damn.

This video is only ever recommended to me after 2am

Fascinating talk - thank you!

Dr Jeff lliff excellent TED presentation, amazingly interesting

Excellent video I remembered a lecture years ago about This and how they developed in the brain, some how that research was stopped. In my mind it makes sense today. It only occurred in the brains of alcohol users over time.

Another reason I quit weed.

Few slides, correct deep professional non-stop talking...man you know your job! kudos

Very very useful in a very basic way! Well done...

*the ironic thing is that im watching this video at 20 past 12 at night*

I thoroughly enjoyed this insight. 100%

The funny part, is that I am staying up late and watching this haha...

Excellent, thank you.

Excellent video on some aspects of sleep science. The findings regarding beta-amyloids are quite interesting. The findings regarding cerebrospinal fluid are also interesting and surprising. But what makes cerebrospinal fluid flow and how does this vary between the wake mode and the sleep mode of the brain?

Clearly an INTELLIGENT Creator designed this ELEGANT system after He forgot to give the brain lymphatic vessels.

notes! why is sleep so restorative? sleep is an elegant design for the brain’s waste removal -the circulatory system provides nutrients to every body cell -every cell creates waste; the lymphatic system removes this but there are no lymphatic cells in the brain -how does the brain clear its waste? -brain has cerebral spinal fluid (CSF) which removes waste -CSF moves along brain blood vessels this only happens when sleeping -when the brain sleeps, brain cells shrink, which makes room for CSF to rush through brain and remove waste! -when awake, brain is busy, puts off waste removal process until sleep what kinds of waste? amyloid beta (AB) - Alzheimer’s is the accumulation of AB, but this doesn’t prove a lack of sleep is the cause sleep literally “refreshes” the mind! more notes! www.kevinhabits.com/ted/

In sleep body heals...elevates moods..n one can do wonders in sleep.Our brain needs to be free of toxic thoughts n info ...so limited valuable access of info while excluding the uselss/bad info ll keep our brains healthy n work alot faster.

50 - 70 million US adults have a sleep disorder. Which means, you are not alone in your quest for better sleep. Think of it this way, if you're awake at 3 PM, so are 45% of your neighbors and city. I use a sleep mask and it works wonders. Since i've started using it on a daily basis, I sleep through the whole night and wake up rested.

Watching this at 3AM. Cue Third Eye Blind and another half dozen cups of coffee.

Amazing speech! Thank you!

You are speech is amazing.

After watching this a couple of minutes past midnight, I shall confidently hit the pillow now.

Show this vid to THOSE people you know, who think that sleep deprivation is a virtue!

OF COURSE I would see this after not sleeping well last night. Thanks Ted-Ed.

Absolutely fascinating video! Thank you for sharing such great information. Makes me think, wow! God is such an amazing Creator!!

Dear Mr. Jeff Lliff, I use stereo earbuds to listen to binaural tones below 4 hz. This causes entrainment in my brain to slow down my brain frequency to below 4hz. This has produced very restorative sleep. Try it. It will help you sleep better.🙂

Wow, absolutely fascinating talk!

Excellent speaker! Amazing topic!

Yea, TED has a good presentation (just almost slept through three bad ones). In full disclosure, I have a very rare neurological disease (adrenomyeloneuropathy) and honestly had to learn to give myself permission to sleep and not feel guilty about it. Oh my, I just noticed this presentation was more than five years ago. I hate it when I'm late for TED presentations. Seriously, can someone explain me how to remain as current as possible. Thanks.

this talk is amazing thank you

The moment you're watching this at 2a.m.🙄🙄🙄🙄😴😴😴😴😴

Amazing knowledge, you just have to put your brain on it...

I love the recent wave of studies on the mind and diseases of it. This gives me hope that one day we'll find a cure for Alzheimer's, dementia and the like. Probably through nanomachines.. we live in an awesome time.

Thank you!

Hello, this is a program called "The Emperor of Thumbs" by MBN, a South Korean broadcasting station. Can we use the cerebrospinal fluid experiment data from 5:08 to 5:55 during Jeff Ilif's lecture?

5am and I'm still awake. Great!

Wow.. This video was pretty useful and very informative and interesting.