Journal
AMERICAN JOURNAL OF PREVENTIVE MEDICINE
Volume 51, Issue 2, Pages 264-270Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.amepre.2016.02.021
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Funding
- National Council of Science [SALUD-2011-1-160496]
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Introduction: The childhood obesity epidemic is a global concern. There is limited evidence in Mexico linking the local food environment to obesity. The purpose of this study is to describe the links between the local food environment around elementary schools and schoolchildren's BMI in two Mexican cities. Methods: Cross-sectional surveys were conducted in 60 elementary schools in two Mexican cities (i.e., Cuernavaca and Guadalajara) in 2012-2013. Anthropometric measurements on schoolchildren were collected, as well as environmental direct audits and observations in a 100-m buffer around schools. Children's BMI was evaluated according to WHO-recommended procedures. In BMI models, the explanatory variable was the number of retail food sources. These models were adjusted for child's characteristics, schools' socioeconomic background, compliance with federal guidelines concerning unhealthy foods within schools' facilities, and corresponding city. Analysis was conducted in 2014. Results: The number of mobile food vendors was higher around public schools than outside private schools (p < 0.05). Linear regression procedures showed a significant positive statistical association between children's BMI and the number of mobile food vendors around schools. Schoolchildren from the highest tertile of mobile food vendors showed 6.8% higher BMI units than those from the lowest tertile. Children attending schools within the highest tertile of food stores also had 4.7% higher BMI units than children from schools in the lowest tertile. Conclusions: Health policy in Mexico should target the obesogenic environment surrounding elementary schools, where children may be more exposed to unhealthy foods. (C) 2016 American Journal of Preventive Medicine. Published by Elsevier Inc. All rights reserved.
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