A study published in the June issue of JAMA Pediatrics found that teens with attention deficit hyperactivity disorder are about one-third more likely to be involved in a car accident than people without ADHD...One of the study's researchers, Dr. Flaura Winston, professor of pediatrics at the University of Pennsylvania in Philadelphia...says that while this finding is important, it's not necessarily cause for alarm. In fact, she calls the study's relatively low increase in risk encouraging, saying that the statistics illustrate "that it's a manageable risk."