Both teens and adults admire professional athletes for their strength and willingness to fight through injuries. In the case of concussions, however, this attitude is very dangerous. Recent headlines have brought shocking revelations about the mental decline of retired athletes who have suffered concussions during their careers. In a number of high-profile cases, head injuries of professional and young athletes have led to illness and death. This book helps readers grasp the mounting evidence about the health effects of concussions. It explores the recent efforts by doctors, scientists, lawmakers, and sports leaders to help protect athletes from this dangerous injury.