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Wheat germ

A little wheat germ goes a long way. Just two tablespoons provides about 15% of your recommended daily intake of vitamin E and 10% of your daily folate. "Vitamin E is often a little low in people's diets, so this is a good way to add in some extra—especially if you don't eat a lot of nuts or seeds, two other big sources," Giovinazzo says.

It's easy to incorporate wheat germ into almost any meal, including your go-to breakfasts: Sprinkle it over cereal, stir it into yogurt, or mix it into a smoothie.

Next: Grapefruit