Soccer: Heading the ball linked to concussion symptoms

(CNN) Whether in practice games or competition, soccer players who frequently head the ball are three times more likely to have concussion symptoms than players who don't rack up high numbers of headers, according to a study published Wednesday in the journal Neurology.

Article on CNN

http://edition.cnn.com/2017/02/01/health/soccer-headers-concussion-study/

Study in the journal of Neurology

http://www.neurology.org/content/88/9/901