The Therapeutic Power of Saunas: Preventing Dementia with Heat?

(Information from Oxford Academic cited below)


In recent years, the topic of dementia prevention has gained considerable attention due to the growing prevalence of this cognitive disorder worldwide. As researchers delve deeper into understanding dementia and its potential risk factors, new avenues for prevention and intervention are being explored. One unexpected but promising area of study is the therapeutic use of saunas. In this blog post, we will explore how saunas can contribute to the prevention of dementia, supported by scientific evidence from a reputable source, Oxford Academic.

The Rise of Dementia

Dementia, a progressive neurodegenerative condition, affects millions of individuals worldwide. Alzheimer's disease, the most common form of dementia, accounts for approximately 60-80% of cases. The impact of dementia is far-reaching, not only affecting individuals but also placing a significant burden on families and healthcare systems.

Oxford Academic and Saunas

In a study published in Age and Ageing, a renowned journal published by Oxford Academic, researchers examined the potential link between sauna use and dementia prevention. The study, titled "Sauna bathing and the risk of dementia: A prospective cohort study," sheds light on the intriguing relationship between heat exposure and brain health.

Heat Therapy and Cognitive Benefits

The study followed a cohort of over 2,000 middle-aged men and women for an average of over two decades. Participants were categorized into three groups based on their sauna usage: those who visited saunas once a week, two to three times a week, or four to seven times a week.

The findings revealed a fascinating association between frequent sauna bathing and a reduced risk of dementia. Participants who engaged in sauna sessions four to seven times a week had a 66% lower risk of developing dementia compared to those who visited saunas only once a week. The protective effect remained significant even after adjusting for other potential risk factors, such as age, sex, socioeconomic status, and cardiovascular health.

Mechanisms Behind Sauna's Impact

Although the precise mechanisms underlying the benefits of sauna therapy on brain health are not yet fully understood, several hypotheses have been proposed. One theory suggests that heat exposure increases blood flow and oxygenation to the brain, promoting vascular health and reducing the risk of cerebral infarctions, which are linked to cognitive decline. Heat shock proteins, which are activated during sauna sessions, are believed to enhance the brain's resilience to stressors and potentially protect against protein aggregation, a hallmark of Alzheimer's disease.

Additionally, saunas have been shown to promote relaxation, improve sleep quality, and alleviate stress—factors that can indirectly contribute to better cognitive function and a lower risk of dementia.

Considerations and Future Research

While the findings from the study are promising, it is important to note that the research focused predominantly on Finnish saunas, which are characterized by dry heat and high temperatures. Other types of heat therapy or saunas with different settings may not yield the same results. Moreover, the study primarily involved middle-aged participants, and further research is needed to determine if similar benefits apply to other age groups.


The potential of saunas to play a role in dementia prevention offers an intriguing avenue for further investigation. The study published in Age and Ageing, supported by Oxford Academic, highlights the positive association between regular sauna use and a reduced risk of dementia. While more research is necessary to elucidate the underlying mechanisms and replicate the findings in diverse populations, the therapeutic benefits of saunas extend beyond relaxation and may contribute to maintaining cognitive health.

As we continue the quest to combat dementia and enhance brain health, exploring non-pharmacological interventions like sauna therapy holds great promise. By harnessing the power of heat, we may unlock a new dimension of prevention and improve the quality of life for individuals at risk of dementia.

Reference: Kunutsor, S. K., Laukkanen, T., & Laukkanen, J. A. (2017). Sauna bathing and the risk of dementia: A prospective cohort study. Age and Ageing, 46(2), 245-249. doi:10.1093/ageing/afw212

Back to blog