A study found that adult men diagnosed with ADHD as a child are twice as likely to be overweight or obese as an adult:
“It’s not uncommon for kids treated with ADHD medications to be fairly thin,” Castellanos said. Because parents often worry that thinner boys won't grow as tall, “sometimes [they] will encourage their boys to eat more.”
Instead, to help avert weight problems down the road, parents should be alert to poor eating habits. “If anything, you have to pay attention to how many times they’re having fast food, how many times they’re having fried food, whether they’re getting meals supersized," Castellanos said.