Andrew Huberman· PhD
and then the the the inverse relationship right as light increases during the daytime you see this reduction in self harm
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The headline is broadly defensible, but the qualifications matter. Effect sizes vary by population, the strongest claims rest on shorter trials, and credible voices push back on how it's typically framed.
and then the the the inverse relationship right as light increases during the daytime you see this reduction in self harm
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self harm really takes a a leap from being fairly I don't want to say minimal at the second and third quartile so low and let's say medium I'm using some I'm taking some Liberties here but low in medium amounts of of artificial light exposure at night than for people who get quite a lot of nighttime light exposure self harm goes up
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Morning sunlight exposure shifts the cortisol awakening response forward, improving daytime alertness.
Long-term morning sunlight reduces age-related macular degeneration risk.
Sleep regularity predicts all-cause mortality more strongly than sleep duration.
Tracking deep sleep on a wearable accurately reflects EEG-measured slow-wave sleep.
Caffeine has a half-life long enough that consumption after 2pm measurably degrades deep sleep in slow metabolizers.