The multifaceted benefits of passive heat therapies for extending the healthspan: A comprehensive review with a focus on Finnish sauna.
Level 5 - mechanism / opinion, no new human data
Narrative review synthesizing existing literature without systematic review or meta-analysis methods.
PubMed 38577299 · doi:10.1080/23328940.2023.2300623
What was done
The authors conducted a narrative review summarizing literature on passive heat therapies, with a specific focus on Finnish saunas (80–100°C, 10–20% relative humidity), evaluating their associations with disease prevention, healthspan extension, and underlying biological mechanisms.
What was found
The abstract provides no quantitative data, odds ratios, or risk estimates. It qualitatively reports that Finnish saunas are associated with decreased risk of hypertension, cardiovascular disease, thromboembolism, dementia, and respiratory conditions, while potentially improving outcomes for musculoskeletal disorders, COVID-19, headache, flu, sleep, mental well-being, and longevity via anti-inflammatory, cytoprotective, and neuroendocrine pathways.
Why it matters
This review outlines the broad physiological impacts of thermal exposure, presenting sauna bathing as a non-pharmacological lifestyle strategy that may complement physical activity to support healthy aging.
Limits
As a narrative review, it lacks systematic search methodology, risk-of-bias evaluation, and meta-analytic pooling. The abstract reports no numerical findings or sample sizes. Underlying primary evidence is largely observational cohort data from Finnish populations, limiting causal inference and direct generalizability to other groups.
Cited by
- context Finnish saunas typically operate at temperatures between 174°F and 179°F with 20% to 30% humidity.