The amount of fast food children eat may be linked to how well they do in school, a new nationwide study suggests.
Researchers found that the more frequently children reported eating fast food in fifth grade, the lower their growth in reading, math, and science test scores by the time they reached eighth grade.
Students who ate the most fast food had test score gains that were up to about 20 percent lower than those who didn't eat any fast food, said Kelly Purtell, lead author of the study and assistant professor of human sciences at The Ohio State University.