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We were interested in looking at this particular group who have a high risk for cardiovascular disease because they are also going to have a high risk of cognitive decline, previous research has suggested that a Mediterranean diet -- rich in fruits, vegetables, whole grains, fish, and healthy fats -- is associated with reduced risk of cognitive impairment. We've also seen preliminary research suggesting that eating vitamin C and folate-rich vegetables like spinach and broccoli may slow cognitive decline. Other research has suggested that blueberries may boost memory, and that a high intake of saturated and trans fats can have negative effects. So it's no surprise that to me that the healthiest eaters in this study fared the best in terms of their cognitive health.