Stunting is a long-term nutritional problem that affects children’s physical and cognitive development and poses a health challenge in the community, especially within the working area of the Malawili Health Center in Sorong Regency, Southwest Papua. One of the main causes is the sub-optimal nutrition literacy among mothers of toddlers. This community service activity aimed to increase mothers’ knowledge of balanced nutrition for stunting prevention through health education using leaflets. The activity was carried out at Posyandu Mentari, within the working area of the Malawili Health center, on July 9, 2026, involving 30 mothers of toddlers. The method used was health education accompanied by a knowledge assessment through pretest and posttest. The results showed an increase in the average knowledge score from 77.67 to 84.33 (a difference of 6.66 points or a relative increase of 8.6%), with the proportion of mothers in the good knowledge category rising from 60.0% to 86.7%. The Wilcoxon Signed-Rank Test results showed a significant difference between the pretest and posttest (Z=-2.950; p=0.010; p<0.05). It can be concluded that nutrition education using leaflets is effective in increasing the knowledge of mothers with toddlers and has the potential to support efforts to accelerate stunting reduction in Sorong Regency.
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