Research

Mixed

Habitual hot-tub bathing (≥4 times/week) is associated with statistically significant, albeit small, improvements in glycemic control (HbA1c), body mass index (BMI), and diastolic blood pressure in patients with Type 2 Diabetes Mellitus.

If you have Type 2 Diabetes, taking a hot tub bath at least four times a week for about 16 minutes is associated with slightly better blood sugar control, lower body weight, and lower diastolic blood pressure. This is not a replacement for medication, but a supportive lifestyle habit. Be cautious if you are elderly or have existing heart conditions, and consult your doctor before starting.

ModerateQualifiesMEDIUM confidence
In this real-world study, habitual hot-tub bathing was associated with slight improvements in glycemia, obesity and diastolic blood pressure, and thus, can be a possible lifestyle intervention in patients with type 2 diabetes.
Hisayuki Katsuyama et al. · Cardiology Research · 2022

Why this rating

Cross-sectional observational study; establishes association but explicitly states causality cannot be guaranteed.

Source

Habitual Hot-Tub Bathing and Cardiovascular Risk Factors in Patients With Type 2 Diabetes Mellitus: A Cross-Sectional Study

Hisayuki Katsuyama et al. · Cardiology Research · 2022

DOI 10.14740/cr1371

cross_sectional · n=1297Cited 8×
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DOI resolved against Crossref · corpus check 2026-06-10

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