<![CDATA[Background: Children's physical and cognitive development are negatively impacted by stunting, a chronic nutritional problem. Stunting prevention is greatly aided by family support, especially when it comes to mothers' views as primary caregivers toward proper childcare and nutrition. One promising family-based strategy for enhancing maternal attitudes toward stunting prevention is grandmother-led health education. Objective: This study aimed to examine the effect of grandmother-led health education on mothers' attitudes toward stunting prevention. Methods: This quantitative pre-experimental study employed a one-group pretest–posttest design involving 25 grandmothers and 25 mothers living in the same household. Grandmothers participated in two 90-minute structured training sessions on stunting prevention before delivering a standardized 90-minute face-to-face health education session supported by an educational video covering stunting definition, risk factors, consequences, infant feeding, balanced nutrition, exclusive breastfeeding, and growth monitoring. Grandmothers' competency was assessed through structured questioning and direct observation using predefined competency criteria before they were allowed to conduct the educational sessions. Mothers' attitudes were measured using a validated and reliable questionnaire before and immediately after the intervention. Data were analyzed using the Wilcoxon signed-rank test. Results: The mean maternal attitude score increased from 62.30 before the intervention to 90.20 after the intervention, representing a mean improvement of 27.90 points. The Wilcoxon Signed-Rank Test indicated a statistically significant difference between pretest and posttest scores (Z = −4.235, p < 0.001). Conclusion: Grandmother-led health education using educational video media significantly improved mothers' attitudes toward stunting prevention. Integrating grandmothers into family-based health promotion programs may strengthen maternal engagement in stunting prevention and contribute to improving child nutritional outcomes.]]>
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