This journal article assesses the impacts of providing lipid-based nutrient supplements to women during pregnancy and postpartum and/or to their children on self-reported household food insecurity. The daily provision of lipid-based nutrient supplements to mothers and their children throughout much of the first 1,000 days may improve household food security in some settings, which could be viewed as an additional benefit that may accrue in households should policymakers choose to invest in these supplements to promote child growth and development.