Support WBURIf You Think Kids Are Eating Mostly Junk Food, A New Study Finds You're RightXcaret NuñezAugust 11, 2021 ShareResearchers found that 67% of calories consumed by children and adolescents in the U.S. came from ultra-processed foods in 2018, a jump from 61% in 1999. The nationwide study analyzed the diets of 33,795 children and adolescents. (Getty Images)