Risk of Herpes Zoster in Relation to Body Mass Index Among Residents Aged ≥50 Years: The Shozu Herpes Zoster Study
Open Access
- 5 August 2022
- journal article
- research article
- Published by Japan Epidemiological Association in Journal of Epidemiology
- Vol. 32 (8), 370-375
- https://doi.org/10.2188/jea.je20200473
Abstract
Background: The impact of body mass index on incidence of herpes zoster is unclear. This study investigated whether it was associated with a history of herpes zoster and incidence during a 3-year follow-up, using data from a prospective cohort study in Japan. Methods: In total, 12,311 individuals were included in the cross-sectional analysis at baseline, of whom 1,818 with a history of herpes zoster were excluded from the incidence analysis, leaving 10,493 individuals. Body mass index (kg/m2) was classified into three categories (underweight < 18.5, normal 18.5 to < 25, and overweight ≥ 25). To evaluate the risk of herpes zoster, we used a logistic regression model for prevalence, and a Cox proportional hazard regression model for incidence. Results: Being overweight or underweight was not associated with herpes zoster prevalence at baseline. The multivariate hazard ratios (95% confidence intervals) of herpes zoster incidence for overweight versus normal-weight groups were 0.67 (0.51–0.90) in all participants, and 0.57 (0.39–0.83) in women, with no significant difference for men. Conclusions: Being overweight was associated with a lower incidence of herpes zoster than being normal weight in older Japanese women.Keywords
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