parents should limit a child intake of sugar because
One question that continues to haunt parents of children with ADHD is: Does sugar cause hyperactivity? Throughout my years of writing about ADHD, parents have consistently written to me asking whether they should limit their child's sugar intake to help reduce hyperactivity.My answer is: You should limit your child's sugar intake because sugar causes tooth decay and eating too many sweet foods can contribute to obesity.espite not causing activity levels to increase, there are several good reasons to cut down on the amount of sugar your child consumes. 1  Sugar is the number one cause of tooth decay. 2  When your child fills up on sugary foods, he may skip more nutritious foods.