<![CDATA[Exclusive breastfeeding is the provision of only breast milk without any other food or drink from birth to six months of age. The practice of exclusive breastfeeding is very important in supporting infant growth and development and reducing infant morbidity and mortality. However, the coverage of exclusive breastfeeding is still not optimal, including for mothers with first-born children (first-born toddlers). This study aims to determine the determinants of exclusive breastfeeding in first-born toddlers in the work area of Dewantara Health Center, North Aceh with variables of knowledge, attitude, and support for breastfeeding. This study uses a quantitative research type with a cross-sectional design. The population in this study were all mothers who had their first-born children (first-born toddlers) in the work area of Dewantara Health Center, as many as 30 people. The sampling technique used total sampling so that the entire sample population was used. Data collection was carried out using a questionnaire and analyzed using the Chi-Square test. The results showed no significant relationship between maternal knowledge and exclusive breastfeeding (p=0.241), no relationship between maternal attitudes and exclusive breastfeeding (p=0.786), and no relationship between breastfeeding support and exclusive breastfeeding (p=0.850). The conclusion of this study is that knowledge, attitudes, and support for breastfeeding are not significantly related to exclusive breastfeeding in first-born toddlers. It is recommended that health workers improve breastfeeding education and support, and strengthen family support for the success of exclusive breastfeeding.]]>
