This study aims to determine the prevalence of undernutrition among schoolchildren and assess their nutritional status based on Body Mass Index-for-Age (BMI/A). Conducted at SD Negeri 5 Tamalatea, Jeneponto Regency, the study involved 60 respondents selected for nutritional assessment and educational intervention. The findings revealed that the average age of respondents was 10.8 ± 0.9 years, with 68.4% aged over 10 years. Gender distribution showed a higher proportion of females (56.7%) compared to males (43.3%). The mean BMI was 16.8 ± 2.8, reflecting considerable variability in nutritional status. Most participants (73.3%) were classified as having normal nutritional status, while 11.7% were undernourished, and 15.0% were classified as overweight. Nutritional assessments were performed using validated tools, followed by educational sessions addressing factors influencing nutritional status, prevention of undernutrition, and the importance of balanced dietary practices. While the majority of respondents exhibited normal nutritional status, the presence of undernourished and overweight individuals highlights the need for targeted interventions. This study underscores the importance of regular monitoring and comprehensive nutritional assessments in school settings to detect and address nutritional disparities. The findings provide a foundation for designing evidence-based programs aimed at improving dietary behaviors and promoting optimal growth among school-aged children.
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