doi:10.3390/children11091093engMiguel-Berges, María L.Larruy-García, AliciaDe Miguel-Etayo, PilarJimeno-Martinez, AndreaTorres, AntonioMoreno, Luis A.Weight Status Determines the Impact of a School-Based Nutrition Education Intervention on Lifestyle Behaviors in ChildrenART-2024-140553Background/Objectives: This study investigated the impact of the FLUYE school-based intervention on children’s lifestyle behaviors, Mediterranean diet adherence, and emotional well-being in Spain. The objective was to promote healthy habits through nutrition education, physical activity, and emotional support within the school environment, with a focus on addressing the needs of both normal-weight and overweight/obese children. Methods: A total of 552 children aged 3 to 12 years participated in the study, with data collected at baseline (T0) and follow-up (T1). The intervention was designed to integrate health education into the school curriculum, emphasizing the development of personal competencies in diet, physical activity, and emotional well-being. The analysis included changes in dietary habits, screen time, physical activity, and psychosocial outcomes, with comparisons made between the normal-weight and overweight/obese groups. Results: Significant improvements were observed in water consumption and reductions in sugar-sweetened beverage intake across both weight groups. However, an increase in screen time, particularly among normal-weight children, highlighted ongoing challenges in reducing sedentary behavior. Adherence to the Mediterranean diet improved more significantly in the overweight/obese group, suggesting the program’s effectiveness in promoting healthier eating patterns among at-risk children. Emotional well-being and self-esteem also saw significant enhancements, with children reporting increased feelings of pride and positivity post-intervention. Conclusions: The FLUYE program effectively improved various aspects of children’s lifestyle behaviors, particularly in dietary habits and emotional well-being. These findings underscore the importance of comprehensive, school-based interventions that address both physical and psychosocial aspects of health, especially for children at higher risk for obesity.2024http://zaguan.unizar.es/record/14565810.3390/children11091093http://zaguan.unizar.es/record/145658oai:zaguan.unizar.es:145658Children 11, 9 (2024), 1093 [14 pp.]byhttps://creativecommons.org/licenses/by/4.0/deed.esinfo:eu-repo/semantics/openAccess