J Appl Physiol (1985). 2025 Dec 27. doi: 10.1152/japplphysiol.00846.2025. Online ahead of print.
ABSTRACT
Hypertension affects over 30% of adults worldwide, significantly increasing the risk of cardiovascular, cerebrovascular, and renal diseases. While regular physical activity is a well- established strategy for lowering blood pressure, additional therapeutic approaches may help individuals who struggle to achieve target blood pressure levels. Hot-water immersion is garnering attention due to its potential cardiovascular benefits. Historically practiced for therapeutic and cultural purposes, hot-water immersion induces physiological responses that share key similarities with physical activity. Accumulating evidence suggests that hot- water immersion may contribute to blood pressure reduction. However, while small-scale studies report promising acute and chronic blood pressure lowering effects, critical gaps remain in the literature. This review summarises current evidence on the anti-hypertensive effects of hot-water immersion, outlining key areas for future research. Hot-water immersion may emerge as an accessible and culturally relevant adjunct therapy for hypertension management.
PMID:41455109 | DOI:10.1152/japplphysiol.00846.2025