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Researchers followed 2,315 middle-aged Finnish men for over 20 years to understand how sauna bathing affects cardiovascular health and longevity. The participants were divided into three groups based on how often they used saunas: once per week, 2-3 times per week, or 4-7 times per week. The study also looked at how long each sauna session lasted.

The results were striking. Men who used saunas 4-7 times per week had a 63% lower risk of sudden cardiac death compared to those who used saunas only once per week. They also had significantly lower rates of fatal heart disease, cardiovascular death, and death from any cause. Longer sauna sessions (over 19 minutes) were also associated with better outcomes than shorter sessions under 11 minutes.

These findings suggest that regular sauna use may be a powerful tool for improving cardiovascular health and extending lifespan. The heat exposure from saunas may improve blood vessel function, reduce inflammation, and provide other physiological benefits similar to moderate exercise. For people interested in metabolic health and longevity, this research adds to growing evidence that heat therapy could be a valuable addition to a healthy lifestyle.

While this study shows strong associations, more research is needed to understand exactly how saunas provide these benefits. Patients interested in incorporating sauna therapy should discuss frequency and duration with their healthcare provider, especially if they have existing heart conditions or other health concerns.