On the heels of the World Cup comes Parents and Pros for Safer Soccer (PASS), an educational campaign that advocates banning headers until high school. Studies show that at least 30% of concussions in youth soccer are caused by heading and heading attempts that result in collisions. Former USWNT player Brandi Chastain (above), who is on the board of the Institute of Sports Law and Ethics, which has paired with the concussion research nonprofit Sports Legacy Institute to create PASS's safersoccer.org, says, "The benefits of developing heading skills as children are not worth the thousands of additional concussions that youth soccer players will suffer." Adds Dr. Robert Cantu, a professor of neurosurgery at BU, "Evidence is mounting ... that the younger one is exposed to repetitive brain trauma, the greater the risk of later life consequences."