Emerging evidence suggests that beyond its use for leisure, sauna bathing may be linked to several health benefits.
A report published in Mayo Clinic Proceedings in August found that sauna bathing is associated with a reduction in the risk of vascular diseases, such as high blood pressure and cardiovascular disease, neurocognitive diseases, nonvascular conditions, such as pulmonary diseases, mental health disorders and mortality.
Furthermore, sauna bathing alleviated conditions such as skin diseases, arthritis, headache, and flu. The evidence also suggests that regular sauna baths are associated with a better health-related quality of life.
The research team – led by scientists from the University of Jyväskylä, the University of Eastern Finland, and the University of Bristol – conducted a comprehensive literature review on the effects of Finnish sauna baths on health outcomes. Finnish sauna bathing is characterised by exposure to high environmental temperature (80℃-100℃) for a brief period.
Findings from this comprehensive literature review also suggest that the health benefits of sauna bathing are linked to the effects of sauna on circulatory, respiratory, cardiovascular and immune functions.
Regular sauna bathing stabilises the autonomic nervous system, reduces blood pressure, inflammation, oxidative stress, circulation of bad cholesterol, arterial stiffness, and vascular resistance. Moreover, sauna bathing contributes to beneficial levels of circulating hormones and other cardiovascular markers.
The same research team has published several experimental studies demonstrating the beneficial effects of short-term sauna exposure on blood pressure, specific cardiovascular biomarkers, inflammation, arterial compliance, and cardiovascular function.
The feelings of relaxation and promotion of mental health and wellbeing associated with sauna sessions may be linked to the increased production of circulating levels of hormones such as endorphins, the research team reported.
The review also reports that sauna bathing produces beneficial changes that are equivalent to those produced by physical activity. Indeed, the research team has shown in their previous studies that a combination of sauna bathing and physical activity might have added health benefits compared with each activity alone.