Food fussiness and food neophobia share a common etiology in early childhood

摘要

BackgroundFood fussiness' (FF) is the tendency to be highly selective about which foods one is willing to eat, and emerges in early childhood; food neophobia' (FN) is a closely related characteristic but specifically refers to rejection of unfamiliar food. These behaviors are associated, but the extent to which their etiological architecture overlaps is unknown. The objective of this study was to quantify the relative contribution of genetic and environmental influences to variation in FF and FN in early childhood; and to establish the extent to which they share common genetic and environmental influences.