Recent findings suggest that stimulant medications may cause a very slight decrease in growth (mainly weight loss due to decreased appetite) in the first 1-3 years of treatment, although most studies confirm that this decrease is temporary and short-lived and does not have an impact on the child’s final height and weight. The impact on your child’s eventual height and weight is not known. If your child is on medication for ADHD, parents should pay a little attention to changes in appetite, height and weight, as well as the growth rate of your child, and take your child for regular checkups to objectively measure and calculate whether your child’s height and weight are in the normal range for children of the same age.