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    Schlafen von weniger als 7 Stunden oder mehr als 9 Stunden, häufiges Nickerchen am Tag und Schlaflosigkeit sind mit einem größeren Volumen an Läsionen der weißen Substanz verbunden, d


    Schlafen von weniger als 7 Stunden oder mehr als 9 Stunden, häufiges Nickerchen am Tag und Schlaflosigkeit sind mit einem größeren Volumen an Läsionen der weißen Substanz verbunden, d

    https://news.arizona.edu/news/struggle-sleeping-these-three-common-sleep-habits-tied-signs-brain-aging-u-study-finds

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    37 Kommentare

    1. sr_local on

      > The study, published in the journal Alzheimer’s & Dementia, used existing brain scans and questionnaire responses from more than 23,000 middle-aged and older adults from a large biomedical database

      >For the study, participants completed a baseline questionnaire from 2006 to 2010 on five sleep behaviors: sleep duration, daytime napping, sleeplessness, unintentional daytime dozing and snoring. About nine years later, the same participants underwent brain MRI scans, which the researchers used to measure white matter lesion volumes. The study was conducted in collaboration with David Raichlen, the lead collaborator at the University of Southern California, and a professor of human and evolutionary biology. 
      >
      >All five behaviors were initially associated with greater lesion volume. But after the researchers accounted for related blood vessel health and lifestyle factors that can also affect the brain, such as high blood pressure, smoking and physical inactivity, three behaviors continued to stand out: sleeping outside the recommended range, frequent daytime napping and greater sleeplessness. Snoring and unintentional daytime dozing did not.
      >
      >The findings on daytime napping were particularly interesting, since research shows short naps may also be helpful for alertness and cognition. Gene Alexander, the study’s senior author and a professor in the Department of Psychology, said that the questionnaire did not capture details on the length or timing of individual naps. Future work will need to test whether shorter, occasional naps have different effects on the brain over time compared to longer, more frequent ones.
      >
      >In a follow-up analysis, the researchers took a closer look at sleep duration and found that participants sleeping fewer than seven hours per night had increased lesion volume compared to those sleeping within the recommended range.

      [Associations of sleep behaviors with white matter hyperintensity volume in middle‐aged to older adults – Ally – 2026 – Alzheimer’s & Dementia – Wiley Online Library](https://alz-journals.onlinelibrary.wiley.com/doi/10.1002/alz.71457)

    3. Tosetanexcellenttori on

      I would expect napping would clean up your brain more, but it seems maybe this is only during rem sleep

    5. pinksailboat on

      So….anything but 7 or 8 hours of sleep is bad.  That’s just fantastic.  

    6. Aiiisch on

      Probably a difference between occasional napping and napping cause you consistently get less than 6 hours of sleep. Consistently getting more than nine, or more than nine plus napping could bring depression into play.

    7. Le-Inverse on

      Sleeping less creating problems seems intuitive, but are we sure that we did not mix up cause and effect? Ie.: greater volume of white matter lesion or whatever thats causing the lesion makes your sleep abnormal

    8. Useful-Plankton8205 on

      I love naps so I probably have a lot of white matter lesions. Still not stopping.

    9. LeafyWolf on

      Is this chronic or episodic? Like, if average sleep is within the 7-9, you’re good? Because I often do a 5 one night and 9 the next.

    10. scientist99 on

      As someone with a low sleep needs kid, it’s been 2 years of terrible sleep. Totally have brain damage.

    12. art-man_2018 on

      There was a recent post here of another study where 6 hours was fine, and naps too…….

      Anecdotal time: My mother took afternoon naps for as long as I can remember (my dad snored, so her normal sleep hours were affected too). She lived to be 101 and never was afflicted with alzheimer’s or dementia.

    13. Any_Comparison_3716 on

      I sleep between 3-5 hours a night for about the last 20 years.

      Is it time for a will?

    14. thekillercook on

      I suffered a mtbi during the recovery I was sleeping from 12-20 hours a day, that was 10 years ago, now I’m getting around 7 but need to take a tranquilizer to due to the pain. There is definitely some sort of pattern.

    17. SleepyGamer1992 on

      I die when I die, man. I see these spooky articles posted on Reddit all the time and you just get desensitized after a while. You can do everything right and still die young.

    18. Crafty_Aspect8122 on

      It’s hard to sleep more than 9 hours unless you have another problem ruining your sleep quality.

    21. firaristt on

      I doubt such research. The best time related with my sleep during the pandemic. I was sleeping 9 hours almost every day and had no sleepiness or low energy during the day, regardless of what I have done during the day. I was going to bed around 12.00 and wake up between 8:45-9:20. Now I’m sleeping around 7-7.5 hours on average and felt like out of battery for the rest of the day and had to sleep longer on the weekends. Anything less than current sleeping schedule for whatever the reason, the day after will be horrible, guaranteed. Everybody has a different body, and you can feel it whether you need more sleep or not. Sleeping less is bigger problem than sleeping more.

    24. Roknik on

      I love reading this as I lay in bed having spent the last 8 hours trying to sleep and given up because I have work soon 🙁

    25. Endogamy on

      When Fitbit tracked the actual time asleep of millions of users, the actual time asleep (not in bed) averaged 6 hours and 38 minutes. Millions of users. I highly doubt 6h 38m is disordered. In fact, I highly suspect that researchers and people in general confuse time in bed vs time asleep, and that the latter is not usually more than 7 hours in healthy people, even if the former may be 8+…

      https://www.nature.com/articles/s41591-024-03155-8

    26. gravelordservant4u on

      Okay but I feel amazing when I hibernate for 12+ hours. 8 feels barely any different than 4.

      Doubt I’ll live long enough to develop Alzheimer’s or dementia anyway

    27. eekay233 on

      Haven’t been able to sleep more then 4 hours a night since my mid 30s. The brain fog is very real.

    28. noraetic on

      Your title makes it sound like more than 9 is bad, while the study says „sleeping outside the recommended seven-to-nine-hour range“ is „associated with a marker of brain aging“ and „We didn’t see greater white matter impacts in people who reported longer sleep durations, but this needs to be followed up in cohorts with more long sleepers.“

    29. CyclopsorNedStark on

      So I see this a lot but I also see so many articles talking about how human used to have 2 sleep periods a days for a few hours each. I’m struggling to resolve what is optimal was “experts” say both things are what’s best for people.

    30. jubmille2000 on

      C’mon man.

      I can’t sleep because of anxiety, and now you’re giving me more reason to can’t sleep. Which leads me to more oversleep.

    31. FWNietzche_ on

      Interesting. So 8 hours as I’ve been told for my whole life is not strictly necessary. I always sleep 7 hours and try to force myself for more. Seems like 7 hours is okay since I feel rested.

    32. One_Pin_6511 on

      Guys calm down and actually read the article its fairly interesting, but i dont really get the header they used since in the article it says “We didn’t see greater white matter impacts in people who reported longer sleep durations” so take that as you may

    35. sleebus_jones on

      Sleep too much? Dementia.

      Sleep too little? Dementia.

      Take a nap? Believe it or not, dementia.

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