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School-Based Interventions to Prevent Overweight in Latin America: A Scoping Review and Policy Analysis
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School-Based Interventions to Prevent Overweight in Latin America: A Scoping Review and Policy Analysis
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Journal Article
School-Based Interventions to Prevent Overweight in Latin America: A Scoping Review and Policy Analysis
2025
Overview
Overweight, including its severe form obesity, among children and adolescents has risen rapidly in Latin America. Schools play a critical role in addressing this growing public health challenge, as they offer a structured setting to implement preventive interventions targeting nutrition literacy, physical activity, and the food environment. The aim of this article is to describe the effectiveness of school-based interventions for preventing overweight in Latin America and whether existing policies, programs and other initiatives in the region align with the best available evidence. Among the 27 interventions included, most were conducted in Chile (41%), used a pre–post design (41%), adopted a preventive approach (85%), and reported positive effects (52%). Effective interventions included activities on nutrition literacy, physical activity, nutritious foods and diets, provision of free and safe drinking water (e.g., water that is free from microbial contamination and suitable for drinking), and healthy food environment. Experimental studies showed that the duration of effective interventions ranged from two months to two years and were primarily directed at primary school students including parents and teachers. Argentina, Chile, Colombia, Mexico, Peru, and Uruguay had multi-component policies and programs under a regulatory framework (e.g., laws or regulations passed by a government) based on the best available evidence to prevent overweight in school-aged children and adolescents. Only a limited number of countries have implemented these interventions. Ensuring program sustainability is critical to inform evidence-based childhood overweight prevention policies in the region. Policymakers should use the best scientific evidence to guide childhood overweight prevention strategies.
Publisher
MDPI AG
Subject
