Policy implementation barriers and the effectiveness of maternal and child nutrition programs in low-resource settings

Although national nutrition policies exist in many low- and middle-income countries (LMICs), maternal and child malnutrition remain persistent, illustrating large policy-to-implementation gaps. This narrative review synthesizes how policy-related implementation barriers affect the effectiveness of maternal and child nutrition (MCN) programs. A systematic literature search was conducted across Web of Science and Google Scholar to identify studies relevant to MCN policy design, implementation, and impact in LMICs. A standardized data extraction form was used to document study characteristics, document policy-related implementation barriers, outcomes in implementation, and recommended interventions. Following data extraction, the results were represented using a narrative synthesis approach. Fifteen peer-reviewed articles published between 2010 and 2024 were found eligible for inclusion in this review. Findings reveal three major categories of policy-related implementation barriers: weak multi-sectoral coordination, weak sub-national policy translation, and weak monitoring and accountability structures. The system revealed both implementation challenges, including inconsistent funding, low technical capacity at the community level, and sociocultural barriers to adoption of MCN services. Studies found that these constraints severely curtailed program effectiveness, with sub-optimal improvements in key indicators like stunting, exclusive breastfeeding and maternal dietary diversity. Recommended interventions were decentralized governance, institutionalized community participation, enhanced workforce training, and embedded real-time monitoring systems. Critical disconnects between policy intentions and on-the-ground implementation are highlighted by this review in low- and middle-income Countries. Good nutrition governance requires coordinated, resourced and context-specific policy-based mechanisms. Adaptive policy models and innovations in implementation science should be evaluated, and further research done in order to sustainably improve MCN outcomes.