Sugar-sweetened beverages and school students' hypertension in urban areas of Nanjing, China

Literature showed that sugar-sweetened beverages (SSBs) could increase the risk of developing hypertension in school students, but there is no reported evidence from China yet, so this study aims to investigate the association of the SSBs consumption and school students' hypertension in urban areas of Nanjing, China. A cross-sectional survey was conducted among primary and junior high school students selected from 32 primary schools and 16 junior high schools using a multistage random sampling method, with a total number of 10,091 participants involved. The mean age of Grade 4 is 9.04 +/- 0.38, while the mean age of Grade 7 is 12.03 +/- 0.41. Blood pressure was measured and SSBs consumption was reported using a validated questionnaire. The overall prevalence of hypertension was 4.5% among the participants. After adjustment for school, parental education, physical activity, diet intake including meat and snacks, participants who had an experience of SSBs intake were at a higher risk of developing hypertension (odds ratio (OR) = 1.40, 95% confidence interval (CI) = 1.15, 1.70) compared with those who had no experience of SSBs intake. A significant association between the consumption of SSBs and hypertension was observed among the students who were at a healthy weight (OR= 1.78, 95% CI= 1.20, 2.65), as well as who were overweight or obese (OR= 1.28, 95% CI= 1.01, 1.61). SSBs may play a contributing role in developing childhood hypertension in this population in China, which is of important implications for future populationbased childhood hypertension intervention in China and other countries.