Illustration by Lauren Tamaki

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Leafy Greens

Any genuinely healthy eating plan is going to be heavy on veggies. The MIND diet places a special emphasis on leafy greens, for good reason: Two large-scale studies of older adults found that eating more than two servings of veggies a day was associated with slower cognitive decline overall, with leafy greens having the strongest effect. Participants in one of the studies who consumed more than two servings of vegetables daily appeared to have a level of brain function equivalent to that of people five years younger. Leafy greens generally contain more vitamin E than other vegetables, and the nutrient is a powerful antioxidant that may help keep neurons healthy. For an extra boost, drizzle some olive oil on your salad. Its healthy fats increase absorption of vitamin E.