The prevalence of overweight and obesity in children have increased in recent years and this has been associated with replacing plain water intake by sugar-sweetened beverages. Because of this, the objective of the present study was to evaluate the impact of a school-based intervention that aimed to replace sugar-sweetened beverages by water. A randomized community trial including 314 children aged 9-11 years from three public schools of the State of Hidalgo, Mexico was performed. Schools were randomized to intervention (two schools from municipality of Apan; six classes with 146 participants) or control group (one school from municipality of Emiliano Zapata; six classes with 168 participants) and followed during 6 months. Intervention included to place water filters at school and classroom lessons to increase water consumption and decreasing sugar-sweetened beverages.
Inclusion Criteria: * Children 8-12 years old * Both sexes * Belonging to public elementary schools, grades 4 and 5, in Hidalgo, Mexico Exclusion Criteria: * Type 1 Diabetes * Heart kidney or liver failure * Limitation of fluid intake by medical prescription.