Head Blows Don't Need to Cause Concussions to Do Damage, a Study of College Football Players Finds

A recent study has found that seemingly healthy college football players are actually suffering from subtle abnormalities related to the repeated head blows they endure while tackling and blocking. The co-senior author of the study, Dr. Hans Breiter of the Northwestern University Feinberg School of Medicine, says college football needs to take steps to make the sport safer for its players.