In this study, we evaluate how an expansion of Medicaid coverage for pregnant women and infants affected the adult outcomes ofindividuals who gained access to coverage in utero and during the first year oflife. We find that cohorts whose mothers gained eligibilityfor prenatal coverage under Medicaid have lower rates ofchronic conditions as adults and fewer hospitalizations related to diabetes and obesity. We also find that the expansions increased high school graduation rates. Our results indicate that expanding Medicaid prenatal coverage had long-term benefits for the next generation. [ABSTRACT FROM AUTHOR]