Practice sauna bathing very frequently (4 to 7 times per week) to preserve long-term cerebral vitality and significantly reduce the risk of major memory disorders.

noli's read

This advice is based on a prospective observational study by Laukkanen et al. (2017), which followed over 2,000 Finnish men for 20 years and associated this frequency with a 65% to 66% reduction in the risk of memory decline. Another long-term cohort study (Knekt et al., 2020) involving nearly 14,000 adults confirms this positive link between heat use and brain health. However, the purely observational nature of these data prevents the establishment of direct causality, as there are no randomized controlled trials (RCTs) on the subject. The figures presented in absolute terms are therefore potentially overestimated due to the 'healthy user' bias: people available to take 4 to 7 saunas per week often have other protective lifestyle habits. While the benefits of thermal relaxation on cerebral well-being and circulation are real, the sauna should be viewed as an excellent wellness supplement rather than an infallible protection.

the sources

1. 1NIH Office of Dietary Supplements 2026
2. 2Manson JE et al. 2019
3. 3foundmyfitness.com/topics