Effect of maternal antenatal and newborn supplementation with vitamin A on cognitive development of school-aged children in rural Bangladesh: a follow-up of a placebo-controlled, randomized trial

Background: The impact of early vitamin A supplementation on neurodevelopmental function has not been adequately studied. In rural Bangladesh we examined cognitive and motor function and scholastic achievement in a cohort of children who were exposed to vitamin A in utero or at birth. Objective: The aim of this study was to examine independent and combined effects of antenatal and newborn supplementation with vitamin A on the cognitive function of children at 8 y of age. Design: A cohort of rural Bangladeshi children from 2 previous double-blind, placebo-controlled cluster-randomized trials were revisited at age 8 y between February 2013 and June 2014. Data on sociodemographic, social, and physical conditions; schooling; child care behavior; anthropometric measures; and cognitive function were collected…