 Antioxidants. You've heard of them, but do you know what they're good for or where to get them? This is Sylvia Escott-Stump of the Academy of Nutrition and Dietetics. Antioxidants. They destroy the free radicals that cause cellular damage. And eating foods that are rich in antioxidants may help prevent cancer and heart disease. These foods include red wine in addition to grape juice, whole grain pasta, eggs, seafood, and canned beans.