Abstract
The objective of this study was to explore relationships between the neighborhood food environment and obesity in urban women living in São Leopoldo, Rio Grande do Sul State, Brazil. A cross-sectional survey was carried out. This study was conducted with 1,096 women. Structured interviews were conducted using a standard pre-tested questionnaire. Obesity was defined as body mass index (BMI) ≥ 30kg/m2. Circular buffers of 400m in radius were created based on the centroid of the women's houses who participated, in the 45 census tracts inhabited by them. Neighborhood food establishments were identified through systematic survey of all streets in the study areas and geographical coordinates of shops were collected. Establishments were evaluated using the NEMS tool. The prevalence of obesity was 33% among the women participants. After adjusting for individual variables, supermarkets and healthy food establishments were positively associated with obesity, PR = 1.05 (95%CI: 1.01-1.10), PR = 1.02 (95%CI: 1.00-1.04), respectively, while mean buffer income was negatively associated, PR = 0.64 (95%CI: 0.49-0.83). Neighborhood food environment factors were associated with obesity even after controlled for individual variables, as socioeconomic variables, behavioral and food purchase.
Highlights
The prevalence of obesity has increased in the world in the last decades 1
The growing increase in obesity is influenced by contextual issues, since lifestyle, diet and physical activity practices are influenced by economic growth [2,3,4,5,6,7,8]
The objective of this study was to explore the relationship between the neighborhood food environment and obesity in women living in São Leopoldo, Rio Grande do Sul State, Brazil
Summary
The prevalence of obesity has increased in the world in the last decades 1. The growing increase in obesity is influenced by contextual issues, since lifestyle, diet and physical activity practices are influenced by economic growth [2,3,4,5,6,7,8]. There is much evidence that family and contextual income influence obesity [9,10,11]. In Brazil, low-income women have a higher prevalence of obesity when compared to high-income women but the causal relationship is not well established [12,13]. Interventions focused on people changing their eating behaviors to improve their nutritional status have had limited success 2. The individual approach is necessary, it is not sufficient and changing the contextual determinants of healthy eating needs to be considered
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