The finding parallels previous studies in boys, the team note.
People with ADHD are at significantly increased risk for cigarette smoking and substance abuse. In the past, there were concerns that treatment of ADHD with stimulant drugs such as Ritalin might increase the risk of drug or alcohol abuse.
But in several studies of boys and young men with ADHD, researchers have found that stimulant treatment actually decreases the risk and delays the onset of substance abuse in adolescence. It does not affect the risk of using tobacco, alcohol, or drugs in adulthood, however.
The same researchers set out to see how stimulant treatment for ADHD affects the risk of substance abuse in adolescent girls.