in News.

Footballers who head the ball repeatedly could be at risk of damage to their frontal lobes, new research in the US suggests.

Twelve teenage girls players were compared with 12 non-players in two tests. One test relied on reactions and there was little difference in the two groups.

But in the test where more thinking was required, the players fared poorly by comparison to the non-players, questioning, once again, the safety of heading a football repeatedly.

http://news.sky.com/story/1057992/headers-may-cause-footballers-brain-damage