Head injuries don’t have to be concussions to harm kids, new study suggests
05:44Researchers have studied the long-term effects of concussions on football players for years, but a growing body of evidence suggests that even hits that don’t cause concussions could still be cause for concern. Launching a new TODAY series, “Winning at All Costs,” NBC’s Stephanie Gosk reports on a groundbreaking new study looking specifically at 8- to 13-year-old athletes.