Association of dietary diversity and cognition in preschoolers in rural China

We sought to investigate the cognition of preschoolers in rural China and examine the relationship between dietary diversity and cognition.We performed a cross-sectional survey analysis. In 1334 preschoolers ages 3 to 5, from 26 preschools in two nationally designated poverty counties in Hunan Province in China, we calculated the dietary diversity score (DDS) using a 24-h recall method. To measure children's cognitive ability, we assessed the...