Concussion expert, Kevin Guskiewicz, PhD, ATC, Kenan Distinguished
Professor and Director of the Matthew Gfeller Sport-Related Traumatic
Brain Injury Research Center at The University of North Carolina at
Chapel Hill, says that, while he hesitates to say that any specific
number of concussions should prompt a decision to retire from contact or
collision sports, it is important for athletes and their parents to
consider the long-term effects of concussion, including depression and
memory impairment.