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Eat More Vegetables
They're rich in vitamins and nutrients (like E, B6, and folic acid) that protect against brain cell damage. But don't forget that as soon as you pick a tomato off the vine or pull a carrot out of the ground, its nutrient content starts to decline. So the longer it sits on store shelves (or inside your refrigerator), the less good it's doing you. Buy the freshest produce you can, or freeze it at the height of freshness for later use.