The Maternal Malaria and Malnutrition (M3) initiative has pooled data from 13 studies covering 8 countries in Africa and Papua New Guinea (from 1996 to 2015) with the goals of improving the understanding of malaria-nutrition interactions during pregnancy and fostering collaboration between nutritionists and malariologists. The dataset comprises essential information such as malaria infection status, maternal anthropometric indicators of undernutrition, presence of maternal anemia, neonatal anthropometrics, and gestational age at delivery. The authors identify the heterogeneity in availability of certain variables as major limitations.