Funding agencies: This work was supported by grants from China Environmental Protection Foundation (CEPF2008-123-1-5).
Ambient air pollution and the prevalence of obesity in chinese children: The seven northeastern cities study
Article first published online: 11 FEB 2014
Copyright © 2012 The Obesity Society
Volume 22, Issue 3, pages 795–800, March 2014
How to Cite
Dong, G.-H., Qian, Z., Liu, M.-M., Wang, D., Ren, W.-H., Flick, L. H., Fu, J., Wang, J., Chen, W., Simckes, M. and Trevathan, E. (2014), Ambient air pollution and the prevalence of obesity in chinese children: The seven northeastern cities study. Obesity, 22: 795–800. doi: 10.1002/oby.20198
Disclosure: The authors declared no conflict of interest.
- Issue published online: 5 MAR 2014
- Article first published online: 11 FEB 2014
- Accepted manuscript online: 30 NOV 2012 08:59AM EST
- Manuscript Accepted: 15 NOV 2012
- Manuscript Received: 11 JUL 2012
The association between air pollution and the prevalence of overweight and obesity is evaluated.
The population consisted of 30,056 children (aged 2-14 years), randomly selected from 25 districts in Northeast China. Child weight and height were measured, and exposures to particulate matter with an aerodynamic diameter ≤10 μm (PM10), sulfur dioxide (SO2), nitrogen dioxides (NO2), and Ozone (O3) were estimated from the data collected at monitoring stations in the 25 districts. Using two-level logistic models, we examined the association between the exposure and the prevalence of overweight and obesity.
Among the study children, 12.3% (3,704) were overweight and 14.1% (4,233) were obese. After adjusting for confounding factors, an increased prevalence of obesity was associated with an interquartile range increase in PM10 (31 μg/m3 ; odds ratio [ORs] = 1.19; 95% confidence interval [CI]: 1.11-1.26), SO2 (7.4 ppb; ORs = 1.11; 95% CI: 1.03-1.20), NO2 (5.3 ppb; ORs = 1.13; 95% CI: 1.04-1.22), and O3 (11.5 ppb; ORs = 1.14; 95% CI: 1.04-1.24). Prevalence of overweight increased with an interquartile range increase in O3 (11.5 ppb; ORs = 1.09; 95% CI: 1.03-1.15).
This study suggests that air pollution is positively associated with an increased likelihood of obesity or overweight in children.