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Impact of Cold Indoor Temperatures on Overactive Bladder: A Nationwide Epidemiological Study in Japan
Tomohiro Ishimaru1, Shintaro Ando2, Wataru Umishio3
1Department of Environmental Epidemiology, Institute of Industrial Ecological Sciences, University of Occupational and Environmental Health, Japan, Kitakyushu, Japan.
Objective:
To assess the relationship between overactive bladder (OAB) and indoor temperatures in the living room and bedroom.
Methods:
Questionnaire data and indoor temperature measurements were obtained from a baseline survey collected during the winter months from November 2014 to March 2019. We performed multiple logistic regression to assess the relationships between OAB and indoor temperatures in the living room and bedroom.
Results:
The prevalence of overactive bladder was 16.4% among 4782 participants living in 2453 dwellings. The odds of having OAB were higher for participants whose average living room temperature at bedtime was lower than 12°C than for those whose average bedtime living room temperature was at least 18°C (adjusted odds ratio = 1.44, 95% confidence interval: 1.03-2.00). No association was observed between bedroom temperature and OAB.
Conclusion:
These results suggest that thermal comfort in the living room-but not in the bedroom-may improve OAB symptoms. Additionally, using sufficient bedding may prevent cold bedrooms from having a negative impact in terms of OAB. Future studies should focus on housing interventions and education regarding lifestyle modification in patients with OAB.
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