Another impressive figure from @LaukkanenJari et al.’s work that we cite in our review: Up

Well SupportedFinnish men using sauna 4-7 times per week have 40-50% lower cardiovascular disease incidence and 40-50% lower all-cause mortality compared to those using it once a week.

Well SupportedDry sauna activates heat-shock proteins in the skin, and a modest 1°C increase in core temperature is sufficient for this activation without risking hyperthermia.

Well SupportedFrequent sauna use is linked to a 60% lower risk of Alzheimer's disease.

Partially SupportedHeat shock proteins are crucial for preventing Alzheimer's disease, heart disease, and muscle atrophy, and are associated with longevity.