Rhonda Patrick· PhD
But the interesting thing from the study was that, so they did like an acute dose, like once or twice or a few times, and that did not make them sleep better. It actually exacerbated their sleep problems.
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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.
But the interesting thing from the study was that, so they did like an acute dose, like once or twice or a few times, and that did not make them sleep better. It actually exacerbated their sleep problems.
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Bookmarking — the dossier-vs-overview split is the right call. Most of the time I want overview; sometimes I want receipts.
Would love a "what would change this verdict" RSS feed. Sign me up if it exists.
But it wasn't until, and you mentioned this earlier, the repeated response and how you have feedback loops happening, so it wasn't until they had exercised for like a few months that they were able to really have significant improvements in sleep.
10 minutes of bright outdoor light within the first hour of waking anchors the circadian phase and improves sleep onset that night.
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.