Mixed
Frequent sauna bathing (4-7 times per week) is associated with a significantly reduced risk of sudden cardiac death, fatal coronary heart disease, fatal cardiovascular disease, and all-cause mortality compared to infrequent use (1 time per week).
If you have access to a traditional Finnish sauna, aiming for 4-7 sessions per week, with each session lasting over 19 minutes at temperatures around 80-100°C, is associated with a significantly lower risk of death from heart disease and all causes. This benefit is observed in middle-aged men. If you have heart conditions, consult a doctor, but for stable individuals, this habit appears protective.
Increased frequency of sauna bathing is associated with a reduced risk of SCD, CHD, CVD, and all-cause mortality.
Why this rating
Prospective cohort study with long follow-up (median 20.7 years) and adjustment for multiple confounders, but observational design prevents causal inference.
Source
Association Between Sauna Bathing and Fatal Cardiovascular and All-Cause Mortality Events
Tanjaniina Laukkanen et al. · JAMA Internal Medicine · 2015
DOI 10.1001/jamainternmed.2014.8187
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