Improving the nutritional status of women and children in South Asia remains a high public health and development priority. Women's groups are emerging as platforms for delivering health- and nutrition-oriented programs and addressing gender and livelihoods challenges. We propose a framework outlining pathways through which women's group participation may facilitate improvements in nutrition. Evidence is summarized from 36 studies reporting on 24 nutritional indicators across infant and young child feeding (IYCF) practices, intake/diet, and anthropometry. Our findings suggest that women's group-based programs explicitly triggering behavior change pathways are most successful in improving nutrition outcomes, with strongest evidence for IYCF practices. Future investigators should link process and impact evaluations to better understand the pathways from women's group participation to nutritional impact.

改善南亚妇女和儿童的营养状况仍然是公共卫生和发展的高度优先事项。妇女团体正在成为提供以健康和营养为导向的方案以及应对性别和生计挑战的平台。我们提出了一个框架，概述了妇女团体参与可能有助于改善营养状况的途径。36项研究总结了证据，这些研究报告了24种营养指标，涉及婴幼儿喂养（IYCF）做法，摄入/饮食和人体测量学。我们的研究结果表明，明确触发行为改变途径的基于妇女的团体计划在改善营养结果方面最为成功，并为IYCF实践提供了最有力的证据。