Work

A pilot study on the relationship between thermal habits, chronic inflammation, and arterial stiffness in young adults

Year: 2025

Type: article

Abstract: OBJECTIVE: Atherosclerotic cardiovascular disease (ASCVD) progresses silently, highlighting the importance of early prevention. This pilot study aimed to examine the relationship between thermal habits-specifically hot-tub bathing-and biomarkers of chronic inflammation, as well as arterial stiffness in young adults. RESULTS: Twenty-five participants were included: 9 males (mean age: 21.78 ± 2.05 years) and 16 females (mean age: 21.0 ± 0.97 years). We assessed hot bathing habits and measured plasma interleukin-6 (IL-6), high-sensitivity C-reactive protein (hsCRP), heat shock protein 70 (HSP70), and brachial-ankle pulse wave velocity (baPWV). IL-6 levels were significantly lower among habitual hot-tub bathers (p = 0.04 overall; p = 0.018 in females). In females, hsCRP tended to be lower with immersion bathing (p = 0.08). No significant differences were observed in hsCRP, HSP70, or baPWV in the overall, male, or female groups. In females, IL-6 negatively correlated with ABI (ρ = -0.543, p = 0.03), and baPWV negatively correlated with bathing duration (ρ = -0.562, p = 0.045). These findings suggest that habitual hot-tub bathing, a culturally embedded and easily implemented habit in Japan, may serve as a lifestyle intervention to reduce inflammation and support ASCVD prevention in young adults.

Source: BMC Research Notes

DOI: 10.1186/s13104-025-07236-w

Authors: Masayo Nagai, Akiko Tanaka

Institutions: SHOWA Medical University, Aino University

Language: English

Topic: Cardiovascular Health and Disease Prevention

Subfield: Cardiology and Cardiovascular Medicine

Field: Medicine

Domain: Health Sciences

SDG: Good health and well-being

Open Access status: gold

Estimated APC paid: $1,690