Association of body mass index and waist circumstance with risk of hypertension and diabetes in Chinese adults

Objective　To evaluate the influences of body mass index (BMI) and waist circumference (WC) on hypertension and diabetes among Chinese adults. Methods　Seventy-nine thousand and twelve adults, aged 20-80 years old, were randomly selected in a cross-sectional survey using cluster sampling. Height, weight, WC, blood pressure (BP), and fasting blood glucose (FBG) level were measured, the prevalence of hypertension and diabetes was calculated with reference to BMI and WC distributions. Logistic regression was used to explore the risk factors. Results　BMI is positively associated with hypertension and diabetes, and WC showed the similar pattern. The adjusted odds ratios (OR) of hypertension and diabetes were 1.7 and 1.7, respectively, for 1 s.d. increase in BMI; the corresponding ORwere 1.7 and 2.0, respectively, for 1 s.d. increase in WC. Younger obese people and women were at higher risk of hypertension and diabetes when BMI(≥30kg/m2) and WC increased. Diabetes showed a higher raising rate with BMI and WC increase than that of hypertension. The combined indicators of BMI and WC were more strongly associated with hypertension and diabetes in both men and women. Conclusion　Obesity or central obesity is associated with an increased risk of hypertension and diabetes, implying a practical need of developing strategies to prevent and control obesity and related chronic diseases. DOI: 10.11855/j.issn.0577-7402.2015.10.07