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Obesity (Silver Spring). 2020 Feb;28(2):412-420. doi: 10.1002/oby.22697. Epub 2019 Dec 3.

Population-Based Study of Traffic-Related Air Pollution and Obesity in Mexican Americans.

Author information

1
Department of Epidemiology, Human Genetics and Environmental Sciences, School of Public Health, The University of Texas Health Science Center at Houston, Houston, Texas, USA.
2
Department of Family Medicine and Population Health, School of Medicine, Virginia Commonwealth University Richmond, Virgnia, USA.
3
Department of Epidemiology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA.
4
Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, New York, USA.
5
Department of Health Promotion and Behavioral Sciences, School of Public Health, The University of Texas Health Science Center at Houston, Houston, Texas, USA.
6
Southwest Center for Occupational and Environmental Health, School of Public Health, The University of Texas Health Science Center at Houston, Houston, Texas, USA.

Abstract

OBJECTIVE:

The purpose of this study was to assess the cross-sectional association between residential exposure to traffic-related air pollution and obesity in Mexican American adults.

METHODS:

A total of 7,826 self-reported Mexican Americans aged 20 to 60 years old were selected from the baseline survey of the MD Anderson Mano-a-Mano Mexican American Cohort. Concentrations of traffic-related particulate matter with aerodynamic diameter  < 2.5 μm were modeled at geocoded residential addresses using a dispersion models. The residential proximity to the nearest major road was calculated using a Geographic Information System. Linear and logistic regression models were used to estimate the adjusted associations between exposure and obesity, defined as BMI ≥ 30.

RESULTS:

More than half (53.6%) of the study participants had BMI ≥ 30, with a higher prevalence in women (55.0%) than in men (48.8%). Overall higher traffic-related air pollution exposures were associated with lower BMI in men but higher BMI in women. By stratifying for those who lived in a 0- to 1,500-m road buffer, the one-interquartile-range (685.1 m) increase of distance to a major road had a significant association with a 0.58-kg/m2 lower BMI (95% CI: -0.92 to -0.24) in women.

CONCLUSIONS:

Exposure to intensive traffic is associated with increased risk of obesity in Mexican American women.

PMID:
31797571
DOI:
10.1002/oby.22697

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