Evidence indicates that hot showers and hot-water immersion generally promote peripheral vasodilation and lead to reductions in blood pressure, although responses can vary depending on individual health status such as preexisting hypertension.
Evidence for · 3
The effects of hot-water immersion on cardiovascular and cardiorespiratory health of healthy adults: A systematic review and meta-analysis.
2026 · cited by 1
A systematic review and meta-analysis found that a single hot-water immersion session significantly decreased diastolic and mean arterial blood pressure.
Evidence against · 1
Hemodynamic response to heated water immersion in older individuals with hypertension
2020 · cited by 5
In contrast to general findings, heated water immersion in older individuals with hypertension was observed to increase systolic and diastolic blood pressure immediately post-immersion.
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More for · 2
The Impact of Acute Hot or Cold Water Immersion on Post‐Exercise Blood Pressure Regulation
2020 · cited by 1
Post-exercise hot-water immersion leads to prolonged reductions in diastolic and mean arterial blood pressure in healthy individuals.
Effects of Bathtub Bathing and Sauna Practices on Cardiovascular and Systemic Health: A Narrative Review.
2026 · cited by 0
Thermal bathing practices such as domestic hot-water immersion promote peripheral vasodilation and influence cardiovascular regulation.