I was referring to evidence that chronic sleep deprivation can increase the risk of Alzheimer’s and other dementias by allowing the brain less time to flush out

I was referring to evidence that chronic sleep deprivation can increase the risk of Alzheimer’s and other dementias by allowing the brain less time to flush out amyloid proteins that can aggregate. http://www.npr.org/sections/health-shots/2016/01/04/460620606/lack-of-deep-sleep-may-set-the-stage-for-alzheimers http://www.npr.org/sections/health-shots/2016/01/04/46062060... ...But everyone’s brain is different, and if you don’t feel your enjoyment of life is being affected, then it’s entirely possible your brain is getting all its maintenance needs met in the time you sleep. I didn’t mean to sound moralizing or judgmental— these decisions are of course entirely ours to make for ourselves.