Benefits and risks of sauna bathing.
Level 5 - mechanism / opinion, no new human data
Narrative review synthesizing clinical and physiological literature without systematic review methodology
PubMed 11165553 · doi:10.1016/s0002-9343(00)00671-9
What was done
This narrative review summarizes published evidence on the physiological changes, potential therapeutic benefits, and clinical risks of sauna bathing in healthy populations and individuals with cardiovascular, pulmonary, musculoskeletal, and skin disorders.
What was found
The abstract reports no numerical data. It qualitatively reports that sauna bathing is well tolerated, does not impair fertility, and is safe in uncomplicated pregnancy. Long-term sauna use may lower blood pressure in hypertension and improve left ventricular ejection fraction in chronic heart failure. It notes transient pulmonary function improvements in asthma and chronic bronchitis, pain relief and joint mobility gains in rheumatic disease, and possible benefits in psoriasis, though sweating can increase pruritus in atopic dermatitis. Severe contraindications include unstable angina pectoris, recent myocardial infarction, and severe aortic stenosis. Alcohol intake during sauna bathing markedly elevates the risk of hypotension, arrhythmia, and sudden death.
Why it matters
The review summarizes practical safety guidance and clinical indications for sauna use, highlighting that while it is safe for stable coronary disease, concurrent alcohol consumption and unstable cardiovascular conditions pose major risks.
Limits
The abstract provides no study counts, participant numbers, effect estimates, or systematic search criteria. As a narrative synthesis, findings are vulnerable to selection bias and confounding, and the authors state that further data are needed to verify cardiovascular outcomes.