There's been speculation about a link between heading a football and brain damages for years, it's amazing it's taking so long to get definitive research on this. Football/rugby associations really should get ahead (no pun intended) of the game on this rather than lagging 10 years behind and allowing more injuries to occur.
Repeated blows to the head during a footballer's professional career may be linked to long-term brain damage, according to tentative evidence from UK scientists. The research, the first of its kind, follows anecdotal reports that players who head heavy balls may be more prone to developing dementia later in life. The Football Association says it will look at this area more closely. But experts said recreational players were unlikely to incur problems.