The evidence is convergent. Multiple independent sources reach the same conclusion, the underlying mechanism is well-characterized, and even the field's most cautious voices treat it as worth doing.
what they found was that the sauna does indeed lead to a significant decrease in cortisol, a stress hormone, a hormone that you want to be released early in the day when you wake up. But sauna definitely led to significant decrease in cortisol
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.
The significant effects of the protocol that I just described were on cortisol, a so-called stress hormone.
sauna baths as they're calling them resulted in a statistically significant increase in cortisol concentration after the first and the 10th sauna session
The major effect of this study is a significant decrease in cortisol output in these subjects.
So the protocol I described of 12minute exposures to 90°ree environment that's again 90° C followed by a 6 minute cool down break in cool water 50° or so that's pretty cold I can imagine that you could also just take a cool shower or a cold shower afterwards that had a very significant effect on lowering cortisol so there you have a tool
4–7 sauna sessions per week, 20 minutes at 80°C+, reduce cardiovascular mortality risk by 40% over a decade.
Regular sauna use raises BDNF and improves verbal memory in older adults.
Sauna protocols only generate the longevity effect when sessions exceed 30 minutes.
Hot-tub bathing yields cardiovascular benefits comparable to traditional Finnish sauna at matched core-temp dose.