AI Article Synopsis
- The study investigates the relationship between long-term exposure to ultra-fine particles (UFPs) and obesity in children in Northeastern China, highlighting a gap in previous research on air pollution's impact on childhood obesity.
- The researchers analyzed data from nearly 48,000 children aged 6-18 and found that higher UFP exposure correlated with increased BMI Z-scores and obesity prevalence, especially among boys and those living near busy roads.
- The findings suggest that reducing UFP exposure could be important for addressing childhood obesity, emphasizing the need for more comprehensive air quality monitoring.
Article Abstract
Background: Studies on the obesogenic effect of air pollution on children have been mixed and sparse. Moreover, due to insufficient air monitoring, few studies have investigated the role of more tiny but unregulated particles (ambient particles with a diameter of 0.1 μm or less, ultrafine particles).
Objective: We sought to explore the associations between long-term exposure to ambient ultrafine particles (UFPs) and childhood obesity in Chinese children.
Methods: In this cross-sectional study, we randomly recruited 47,990 children, aged 6-18 years, from seven cities in Northeastern China between 2012 and 2013. Child age- and sex-specific z-scores for body mass index (BMI Z-score) and weight status were generated using the World Health Organization growth reference. Four-year average concentrations of UFPs and airborne particulates of diameter ≤ 1 μm (PM), ≤2.5 μm (PM), and ≤10 μm (PM) were estimated at home, using neural network simulated WRF-Chem model and spatiotemporal model, respectively. Confounder-adjusted generalized linear mixed models examined the associations between air pollution and BMI Z-score and the prevalence of childhood obesity.
Result: We found that UFPs exposure was associated with greater childhood BMI Z-score and a higher likelihood of obesity. Compared with the lowest quartile, higher quartiles of UFPs were associated with greater odds for obesity prevalence in children (i.e., the adjusted OR was 1.25; 95 % CI, 1.12-1.39; 1.43; 95 % CI, 1.27-1.61; and 1.41; 95 % CI, 1.25-1.58 for the second, third, and fourth quartile, respectively). Similar associations were observed for PM, PM, and PM, and were greater in boys and children living close to roadways.
Conclusions: Long-term UFPs exposure was associated with a greater likelihood of childhood obesity, and stronger associations on BMI Z-score were observed in boys and children living close to roadways. This study indicates that more attention should be paid to the health effects of UFPs, and routinely monitoring of UFPs should be considered.
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| http://dx.doi.org/10.1016/j.scitotenv.2022.157524 | DOI Listing |
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