Veterans and American footballers at increased risk of dementia or cognitive decline, studies claim

The research will be presented at the International Conference of Alzheimer's Disease in Paris today (Monday 18 July 2011).  A second study found former American (NFL) footballers were at increased risk of mild cognitive impairment or cognitive decline.

Researchers reviewed the medical records of 281,540 American veterans aged 55 and older without a diagnosis of dementia. They found those who had experienced TBI had a 15.3 per cent risk of dementia compared to 6.8 per cent in those without. In the NFL study, researchers sent a health survey to former NFL players aged over 50. Of the 513 respondents, 35 per cent had a score that suggested possible dementia. It is estimated 13 per cent of Americans over 65 has dementia. They also found the former footballers were more likely to develop mild cognitive impairment at a younger age than the general population.

Alzheimer's Society comment:

'The immediate impact of a serious knock to the head is clear to see. But as this research shows, there could also be significant long term effects. It is likely that this is because of swelling on the brain which we know does increase risk of dementia.'It is important to note that these studies are looking at groups who are at high risk of frequent and severe head injuries so people prone to the odd minor bumps needn't panic. That said it's always a good idea to protect your head. We now need to build on these findings to increase our understanding of the brain and move us closer to new treatments.'

Professor Clive Ballard
Director of Research
Alzheimer's Society