Andrew Huberman· PhD
The amount of testosterone and estrogen that human beings make varies such that in longer days they tend to make more testosterone and estrogen than in shorter days.
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.
The amount of testosterone and estrogen that human beings make varies such that in longer days they tend to make more testosterone and estrogen than in shorter days.
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Native comments, Twitter mentions, and Reddit threads about this claim — surfaced together so the conversation isn't fragmented across platforms.
Bookmarking — the dossier-vs-overview split is the right call. Most of the time I want overview; sometimes I want receipts.
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