Assessing the Impact of Dietary Education on Obesity Prevention in Preschool Children

Thesis Abstract

The rising prevalence of childhood obesity presents a significant public health challenge, particularly among preschool children, whose early dietary habits can have long-term health implications. Despite the recognition of dietary education as a preventive intervention, limited empirical evidence exists regarding its effectiveness within preschool settings, especially in terms of behavioral change and weight outcomes. This study aims to assess the impact of structured dietary education on obesity prevention among preschool children aged 3 to 5 years. The specific objectives include evaluating changes in dietary knowledge among children and parents, measuring alterations in dietary behaviors, and examining the subsequent effects on BMI z-scores over a six-month intervention period. A quasi-experimental research design with a mixed-methods approach was employed to facilitate comprehensive data collection and analysis. The population comprised 300 preschool children and their respective parents drawn from ten randomly selected preschools within urban local government areas. A stratified random sampling technique was used to allocate 150 children to an intervention group and 150 to a control group, ensuring demographic and socioeconomic balance. The intervention involved a 12-week dietary education program delivered through weekly interactive sessions, involving children, parents, and preschool staff. Data collection instruments included validated questionnaires to assess dietary knowledge and behaviors, child BMI measurements recorded at baseline and post-intervention, and semi-structured interview guides for qualitative insights. The questionnaires’ validity and reliability were established through pilot testing and Cronbach's alpha analysis (? = 0.82). Quantitative data were analyzed using descriptive statistics, paired sample t-tests, and multiple regression analysis to identify factors influencing dietary behaviors and weight outcomes. Thematic analysis was employed to interpret qualitative data for contextual understanding of stakeholders' experiences. It is anticipated that participants in the intervention group will exhibit statistically significant improvements in dietary knowledge and healthier eating behaviors compared to the control group, accompanied by a reduction in BMI z-scores. Regression analysis is expected to reveal that increased dietary knowledge and behavioral modifications contribute significantly to weight management outcomes. The findings are expected to substantiate the theoretical framework rooted in Social Cognitive Theory, emphasizing observational learning and self-efficacy in dietary behavior change, as well as the Health Belief Model, which underscores perceived susceptibility and benefits of healthy eating habits. This research makes a substantial contribution to knowledge by providing empirical evidence on the efficacy of dietary education programs tailored for preschool contexts, thereby filling existing gaps in the literature concerning behavioral and physiological outcomes. It advances understanding of how early nutritional interventions influence obesity prevalence and offers practical insights for policymakers, educators, and healthcare professionals on designing effective prevention strategies. The study concludes that structured dietary education significantly enhances dietary knowledge and behaviors among preschool children, leading to measurable reductions in obesity risk within a short timeframe. Recommendations include integrating comprehensive dietary education modules into preschool curricula, training teachers on nutrition counseling, and involving parents more actively in dietary interventions. Future research should explore longitudinal effects of dietary education on obesity prevention and assess the scalability of such programs across diverse socioeconomic and cultural settings. Implementing multifaceted, school-based dietary interventions rooted in behavioral theories shows promise for scalable, sustainable obesity prevention strategies in early childhood populations.