The following article is from todays daily express.
Could omega 3 halt dementia

eating fish seems to reduce peoples risk of alzheimer,s disease, and may even slow its progress. Researchers at tufts university, boston, studied the link between the level of an omega 3 fatty acid (dha), in the blood of 899 men and women, and the chance that they developed alzheimers or another form of dementia. Those with the highest levels of dha, had a 47 per cent lower risk of dementia, and a 39 per cent lower risk of alzheimers. They also had the highest fish intake- an average three servings a week.