A West Virginia University study has found that multiple mild traumatic brain injuries can increase risk of developing clinical depression. The risk was found to be nearly three times greater than with people that have no history of concussion. The study findings were presented at the Annual Meeting of the American Association of Neurological Surgeons. The study’s author concluded concussions and other head injuries in early adulthood greatly increase the risks of depression years later as well, concussion are reported to have a long-lasting and permanent effect on thinking and memory skills later in life.