Para combatir la mala nutrición en todas sus formas es necesario integrar acciones desde la sociedad en su conjunto. El interés superior de los actores involucrados en generar estas acciones debe ser la salud. No obstante, existen actores con conflictos de interés que interfieren en el diseño, planeación, implementación y monitoreo de las políticas derivadas de dichas acciones. A fin de mitigar el efecto adverso que generan estos conflictos desde la etapa de generación de evidencia hasta el diseño e implementación de las políticas, se propone este código. Se invita a la comunidad de nutrición y salud a adoptarlo, promoverlo y sumarse al mismo, para favorecer el avance de las acciones y políticas necesarias sin interferencia de la industria y resolver el problema de la mala nutrición.

(1) Background: The importance of studying the health interventions used to prevent and treat overweight and obesity in school-aged children is imperative. This overview aimed to summarize systematic reviews that assess the effects of school-based, family, and mixed health interventions for preventing and treating overweight and obesity in school-aged children. (2) Methods: The Cochrane Collaboration methodology and PRISMA statement were followed. A search was conducted using terms adapted to 12 databases. Systematic reviews reporting interventions in children from six to 12 years old with an outcome related to preventing or treating obesity and overweight were included. Studies with pharmacological or surgical interventions and adolescents were excluded. (3) Results: A total of 15,226 registers were identified from databases and citation searching. Of those, ten systematic reviews published between 2013 and 2022 were included. After the overlap, 331 interventions for children between 6 and 12 years old were identified, and 61.6% involved physical activity and nutrition/diet intervention. Multicomponent intervention, combining physical activity with nutrition and behavioral change, school-based plus community-based interventions may be more effective in reducing overweight and obesity in children. (4) Conclusions: Plenty of interventions for childhood overweight and obesity aimed at prevention and treatment were identified, but there is a gap in the methodological quality preventing the establishment of a certain recommendation.

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