The goal of this study was to examine the relationship between religiosity and
cardiovascular risk factors in a Japanese population. A retrospective cohort study was
conducted involving individuals who underwent annual health check–ups at St. Luke's
International Hospital from 2005 to 2010. Data collected included self–reported
demographics, clinical information, and health habits, as well as religiosity, baseline
examination, and laboratory measures. We conducted multivariable regression analyses to
examine the associations between religiosity and cardiovascular risk factors at baseline
and longitudinally. The analyses were performed in 2012. A total of 36,965 participants
were enrolled, and 13,846 (37.8%) reported being at least somewhat religious. Compared
with those who were not religious at baseline, religious participants (n = 3685) were less
likely to be current smokers (odds ratio [OR], 0.59; 95% confidence interval [CI],
0.53–0.67) and to report excessive alcohol consumption (OR, 0.74; 95% CI,
0.67–0.82), and more likely to exercise at least three times a week (OR, 1.27; 95%
CI, 1.16–1.39) and to be obese (OR, 1.32; 95% CI, 1.19–1.47). There were no
significant differences in the rate of hypertension, diabetes mellitus, or dyslipidemia
prevalence. In longitudinal data analyses, religiosity was associated with a lower
likelihood of smoking and excessive alcohol consumption, and a higher likelihood of
regular exercise and a lower incidence of diabetes over time. Individuals who were more
religious were significantly more likely to have favorable health habits and fewer
cardiovascular risk factors, except for a higher prevalence of overweight/obesity at
baseline. Religiosity was also associated with better health habits over time and less
likely to be associated with future diabetes but not with blood pressure or lipid
levels.