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rabois's profile
Keith Rabois
Keith Rabois
Keith Rabois
@rabois

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Keith Rabois

@rabois

entrepreneur, investor, contrarian

SF, CA
Joined February 2009

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    1. JD Ross‏ @justindross Nov 17
      Replying to @rabois @alexeyguzey @Chris_Said

      I’ll read it. That can be true in isolation and also not relevant for all-cause mortality, which seems to be lowest around 6 hours per night (figure 1 in my link with links to backing studies)pic.twitter.com/fIxv92b0B0

      2 replies 0 retweets 9 likes
    2. Gary Basin  ❄️‏ @garybasin Nov 17
      Replying to @justindross @rabois and

      True. I haven’t looked at the papers Alexey worked from, but the first thing that comes to my mind with this kind of data is causation vs correlation. It’s similar to the weight vs mortality risk models: Sick people tend to be underweight, and sleeping a lot, etc.

      1 reply 0 retweets 4 likes
    3. Keith Rabois‏ @rabois Nov 17
      Replying to @garybasin @justindross and

      it is causal.

      1 reply 0 retweets 2 likes
    4. Keith Rabois‏ @rabois Nov 17
      Replying to @rabois @garybasin and

      the evidence of sleep on perfromance and productivity is unequivocal.

      2 replies 0 retweets 8 likes
    5. Alexey Guzey‏ @alexeyguzey Nov 17
      Replying to @rabois @garybasin and

      That is true! I never argue that sleep is not important. I argue that 1) Why We Sleep is scientifically inaccurate, despite Walker's claiming the opposite 2) people should sleep as much as they need and this varies a lot. Walker claims 8 hours is recommended, which is not true.pic.twitter.com/GeF5L34LLh

      1 reply 0 retweets 7 likes
    6. José Luis Ricón (Artir)‏ @ArtirKel Nov 17
      Replying to @alexeyguzey @rabois and

      I just checked the book (The Telomere Effect). The study that's perhaps referred to here(Which Walker also mentions, the one about the civil servants) is an association study, not causal.

      2 replies 1 retweet 6 likes
    7. José Luis Ricón (Artir)‏ @ArtirKel Nov 17
      Replying to @ArtirKel @alexeyguzey and

      The one claim for "missing a night of sleep /sleeping badly" says it increased the levels of cortisol.

      1 reply 0 retweets 3 likes
    8. Alexey Guzey‏ @alexeyguzey Nov 17
      Replying to @ArtirKel @rabois and

      is short-term increase in cortisol unhealthy? or is it just a temporary stress reaction like an increased heart rate during exercise?

      1 reply 0 retweets 1 like
    9. José Luis Ricón (Artir)‏ @ArtirKel Nov 17
      Replying to @alexeyguzey @rabois and

      I haven't even checked the paper itself, that's a separate question. But causally, it strikes me as odd that just a night of sleep would cause anything to telomeres. As far as I could find online ("rct telomere sleep") that has not been tested.

      2 replies 1 retweet 3 likes
    10. José Luis Ricón (Artir)‏ @ArtirKel Nov 17
      Replying to @ArtirKel @alexeyguzey and

      In the general case, I would probably say that nothing affects telomere length in the short term. Long term there may be some things. Hopefully I'll be pointed out to papers showing otherwise. (I just found a review saying diet does not, exercise is mixed evidence)

      2 replies 1 retweet 0 likes
      Keith Rabois‏ @rabois Nov 17
      Replying to @ArtirKel @alexeyguzey and

      see forthcoming book The Joy of Movement for evidence on excercise.

      1:13 PM - 17 Nov 2019 from San Francisco, CA
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