Children and teens who are diagnosed with attention deficit hyperactivity disorder (ADHD) and take medication for the condition are less likely to have a substance use disorder than youth with ADHD who don’t take medication, a new study finds. Researchers at Princeton University found children and teens with ADHD who received medication were 7.3 percent less likely to have a substance use disorder. They also were 3.6 percent less likely to contract a sexually transmitted disease and 2.3 percent less likely to be injured, HealthDay reports. The findings are published in Labour Economics. Study co-author Anna Chorniy said young people with ADHD tend to have problems with self control, which can lead to injury and engaging in risky behaviors.