Soccer players have always been assured that heading the ball — redirecting it by having it bounce off the head — is harmless when done correctly.
But brain researchers say the practice needs to be studied more to determine it's a true risk for concussion.
Soccer alone accounts for 15 percent of the total number of concussions in all sports, one study found. And what sport comes right behind football in the its share of all sports-related concussions?
Considering soccer is the world's most popular sport, the specialized move deserves more research, said Tom Schweizer, director...