A swedish study reveals ADHD is linked to increased traffic accidents. People with attention-deficit hyperactivity disorder are 50 percent more likely to be in a serious accident compared those without the disorder. 

The study observed a total of 17,408 people with ADHD from Jan. 1, 2006 to Dec. 31, 2009 for serious traffic-realted accidents. The study also compared men and women. There were about 214 accidents for every 10,000 men and about 120 accidents for every 10,o00 women. 

ADHD is a behavioral and developmental disorder, according to the Center for Disease Control (CDC). It usually develops in early childhood and results in people having trouble focusing, controlling impulsive behaviors and can be overly active. There are multiple causes of ADHD which includes brain injury, environmental exposures, alcohol and tobacco use during pregnancy, premature delivery and low birth weight. 

The study gathered driving data from people with ADHD on medication compared to those who were not prescribed. They found men on medication for ADHD, were 50 percent less likely to be in accident. For women, there was no difference in the risk. The study concluded that medication can help control the symptoms of ADHD and overall, lower risk for some.