Elderly people who eat fish or seafood at least once a week are at lower risk of developing dementia, according to a recent study. A team of French researchers questioned 1,674 people aged 68 and over without dementia about their eating habits to discover whether there was a relation between consumption of fish (rich in polyunsaturated fatty acids) or meat (rich in saturated fatty acids) and risk of dementia. Participants were followed up two, five, and seven years afterwards.