Attention Deficit Hyperactivity Disorder (ADHD) is one of the most prevalent neurodevelopmental disorders during childhood and adolescence. Diet has been identified as a relevant contributor to the worsening of ADHD symptoms in childhood. This study aimed to examine the cumulative impact of consumption of unprocessed and ultra-processed foods at ages 2, 4, and 6-7 on ADHD symptoms at age 6-7, and to identify potential sensitive periods of dietary exposure. We analyzed data from 3643 children…
