Association between obesity phenotypes and incident hypertension among Chinese adults: a prospective cohort study

Objectives: To explore the association between obesity phenotype and the risk of hypertension among Chinese adults. Study design: A prospective cohort study. Methods: Two waves of data were collected in 2009 and 2011 by the China Health Nutrition Survey. According to International Diabetes Federation and Chinese obesity criteria, participants were divided into four groups: metabolically healthy non-overweight/obesity (MHNO), metabolically healthy overweight/obesity (MHO), metabolically abnormal non-overweight/obesity (MANO), and metabolically abnormal overweight/obesity (MAO). Logistic regression model was performed to estimate the risk of hypertension with obesity phenotype. Results: Among a total of 4604 adults aged 18-65 years at baseline, 467 developed hypertension during the 2-year follow-up period. After adjusting for several potential confounders, significantly increased risks for hypertension were found for participants in MHO (odd ratio [OR]: 1.78, 95% confidence interval [CI]: 1.39-2.27), MANO (OR: 1.71, 95% CI: 1.02-2.86), and MAO (OR: 3.35, 95% CI: 2.54-4.42) group compared with the MHNO group. Conclusion: Metabolically abnormal individuals, regardless of their body weight status, showed significantly higher risks for hypertension compared with healthy nonoverweight/obese group. Furthermore, MHO individuals had significantly increased risk of incident hypertension. (C) 2017 The Royal Society for Public Health. Published by Elsevier Ltd. All rights reserved.