Adolescent obesity is a growing public health concern worldwide, with significant implications for long-term health outcomes such as type 2 diabetes, cardiovascular disease, and psychosocial disorders. This study aimed to evaluate the effectiveness of multi-component, community-based interventions in reducing obesity prevalence and promoting healthy behaviors among adolescents aged 12–18 years. A quasi-experimental design was employed across five urban and rural communities, incorporating nutrition education workshops, structured physical activity programs, and behavioral counseling sessions over a 12-month period. Anthropometric measurements, dietary intake assessments, and physical activity logs were collected at baseline and follow-up. Post-intervention analysis showed a statistically significant reduction in mean BMI z-scores (p < 0.01), improved daily fruit and vegetable consumption, and increased moderate-to-vigorous physical activity levels. Qualitative interviews indicated high participant satisfaction and increased health literacy. The study highlights that multi-level, community-driven interventions are effective in promoting sustainable healthy behaviors and reducing obesity risk among adolescents. These findings support the scaling up of similar programs in diverse socio-cultural settings to address the adolescent obesity epidemic.

Keywords: Adolescent obesity, community intervention, nutrition, physical activity, behavioral health, public health