Men and women who eat fish or seafood at least once a week are at lower risk of developing Alzheimer’s disease, a large long term study among French elderly indicates. Using the data from an ongoing study among the aging in France, Dr Pascale Barberger-Gateau and colleagues at the Universite Victor Segalen, Bordeaux, decided to test the evidence for any relationship between the risk of dementia from the consumption of fish, rich in polyunsaturated fatty acids or meat, rich in saturated fatty acids.
The researchers enrolled 1,674 men and women aged 68 and over, who were living at home in south-western France. None suffered from dementia at the start of this arm of the aging study. How often they ate meat, fish and seafood, was assessed at either daily, at least once a week (but not every day); from time to time (but not every week); or never.
Researchers followed up the cohort at two, five and seven years. If a member of the cohort exhibited signs of dementia between follow-up years, based on criteria of DSM III R, they were also assessed by a neurologist.
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