Recent studies show that nuts can help prevent heart disease. They are rich in unsaturated fats, including monounsaturated fats, as well as vitamin E, fiber, folic acid, and other B vitamins. Choose unsalted nuts, and don’t eat huge amounts. Add nuts to salads, cereals, and rice dishes. Walnuts are especially rich in heart-healthy oil.
(Source: UC Berkeley Wellness Letter: Healthy Eating)