Finnish Sauna Visits Linked to Reduced Dementia Risk

Regular sauna visits may not only keep individuals fit but could also reduce the risk of dementia. Finnish long-term studies and sports scientists explain this effect. According to a study from the Finnish Institute for Health and Welfare, individuals aged 30 to 69 who participated in sauna sessions were surveyed about their frequency of visits. The researchers also recorded the dementia rates among participants. Over a 20-year observation period, those who visited the sauna nine to twelve times a month had less than half the dementia risk compared to those who went a maximum of four times a month. Study leader Paul Knekt noted that even three visits a month could significantly lower dementia risk.

Sauna and Dementia Risk

The findings align with another notable Finnish study, the Kuopio Ischemic Heart Disease Risk Factor Study (KIHD), led by Prof. Dr. Jari Laukkanen. This study tracked over 2,300 men for more than 20 years. Results indicated that men who visited the sauna four to seven times a week had a 66% lower risk of dementia and a 65% lower risk of developing Alzheimer’s compared to those who only used the sauna once a week. Modern heat therapy analyses further demonstrate the positive effects of heat exposure on heart health, blood pressure, and vascular function.

While the authors agree that the study does not allow for a definitive causal conclusion, they suggest that regular sauna visits could lower dementia risk. Sascha Ketelhut from the University of Bern emphasizes that sauna visits are often a social activity in Finland, which is known to protect against dementia. Physiological models also provide explanations, as sauna use reduces harmful inflammatory processes and improves stress regulation. The body’s response to heat leads to adaptations in the cardiovascular system, promoting vascular elasticity and potentially preventing hypertension, a major risk factor for dementia.

In a Finnish study, individuals who visited the sauna two to three times a week had a 24% lower risk of hypertension, while those who went four to seven times a week had a 45% lower risk compared to those who went only once a week. Ketelhut advises that while frequent sauna use is beneficial, it is not necessary to go every day; one to three times a week is sufficient for health benefits. He also recommends taking breaks between sessions to allow for recovery. Overall, there are few restrictions on sauna use, but individuals with acute infections should avoid it due to potential health risks.