Walnuts are renowned in Chinese medicine as the longevity fruit. As well as snacking on fresh shelled nuts, try using the oil in cooking and salad dressings. Packed with heartprotecting antioxidants and fats, walnut oil has a nutty flavor that works well with potatoes and other root vegetables. Peanuts share their cholesterol-lowering properties and are also linked to a decreased risk of heart disease. Eat a handful of almonds each day for their healthy monounsaturated fats, which are associated with a lowered risk of coronary heart disease and stroke.