Universal Free School Meals in Developed Countries: A Systematic Review of Policy Impacts and Implementation

Abstract

Universal free school meal policies have gained attention as instruments to improve dietary equity and child well-being in developed countries, but evidence on their outcomes and implementation remains fragmented. This systematic review synthesized evidence on universal free meal policies across developed countries. Following PRISMA guidelines, six databases were searched, and studies published within the past decade were screened using predefined criteria. Of 699 records identified, 93 studies were included and synthesized narratively across participation and socioeconomic equity, nutritional intake, implementation, and educational, developmental, and behavioural outcomes. Findings indicate that universal provision increases participation, reduces stigma, and alleviates household financial pressure. However, nutritional benefits depend on meal quality, palatability, menu design, eating time, and the school food environment, while educational and behavioural effects are generally modest. Overall, universal access should be accompanied by attention to food quality, infrastructure, staffing, and supportive school environments. Further longitudinal and context-specific research is recommended.