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Updated: Sep 18, 2025

Determining Viral Disinfection Efficacy of Hot Water Laundering
Published on: June 21, 2022
Comparison of bathing-related adverse events, including drowning, between hot spring bathing and general bathing: A
Ryuto Yokoyama1, Kenya Yarimizu2, Kento Sakaguchi1
1Department of Emergency and Critical Care Medicine Yamagata University Hospital Yamagata Japan.
Aims:
While Japan's bathing culture contributes to better health, it has also become a social problem due to the high number of medical care emergencies arising from bathing-related adverse events. In particular, bathing in hot springs may pose unique risks. This study aimed to examine the relationship between bathing-related adverse events, including drowning, and the location of bathing, specifically hot springs and other bathing sites.
Methods:
This single-center, retrospective cohort study included 125 participants who had bathing-related adverse events from March 1, 2012 to February 29, 2024. Participants were classified into two groups according to the bathing location: hot spring (Group H; n = 24) and other bathing (Group B; n = 101) groups. Logistic regression analysis was conducted using drowning as the objective variable and bathing in hot springs and age as explanatory variables.
Results:
Only the incidence of drowning showed a significant difference between the two groups (Group H: 9/24 [37%] vs. Group B: 18/95 [18%]). Logistic regression analysis showed that bathing in hot springs was an independent factor associated with drowning, with no significant difference by age.
Conclusion:
The results of this study suggest that drowning is more frequent among individuals who bathe in hot springs. Larger scale studies are needed to explore the causes of drowning during hot spring bathing and the relationship between hot spring bathing and bathing-related adverse events.
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