Here’s more good news about the omega-3 fatty acids found in fish and the vitamins found in fresh fruits and vegetables: seniors with high levels of these nutrients did better on tests of mental acuity and had less of the brain shrinkage that signals Alzheimer’s disease. (If you want the opposite effect, the researchers at the Linus Pauling Institute at Oregon State University said that their study suggests that the best route is to eat a lot of junk foods.) To arrive at their conclusions, the investigators measured levels of these nutrients in the blood of 104 seniors (average age, 87) participating in the study and found that vitamins B, C, D, E and omega-3s conferred the most benefits on the brain. In addition to the blood tests, 42 participants had MRIs to measure brain volume. Many previous studies of nutritional effects on the brain have been based primarily on food questionnaires, which yield less precise data. The researchers said that their findings need to be confirmed by further .research.
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