Andrew Huberman· PhD
Asterisk for cold it’s because some people get a cortisol spike just by reading that word.
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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.
Asterisk for cold it’s because some people get a cortisol spike just by reading that word.
Every Sunday: the week’s new conflicts and verdict changes — and nothing else.
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.
Would love a "what would change this verdict" RSS feed. Sign me up if it exists.
Does Deliberate Cold Exposure Increase Cortisol?
No evidence that deliberate cold exposure increases cortisol.
Does Deliberate Cold Exposure Increase Cortisol?
Does Deliberate Cold Exposure Increase Cortisol?, Energy & Mood
And it's interesting that they noted that in all cases, but especially at that coldest temperature, there was an increase in cortisol, but that it was transient, That eventually people's cortisol, the stress hormone subsided a bit.
Now the big question for sake of this discussion is does deliberate cold exposure cause the release of cortisol. And just like with exercise, just like with caffeine, the real question that we have to ask ourselves is how novel how unfamiliar is that deliberate cold exposure?