Foods rich in antioxidants include fruits such as prunes, grapes and berries, legumes such as pinto beans and kidney beans, and green leafy vegetables such as spinach and broccoli. Other foods that contain high amounts of antioxidants include whole grain carbohydrates, fish, orange vegetables, nuts and tea. Phytochemicals, vitamins, minerals and trace elements and polyunsaturated fatty acids are examples of common antioxidants found in foods.
Experts at WebMD advise consuming antioxidants from food as opposed to nutritional supplements, as most of these foods also have other health benefits, and the body easily absorbs the antioxidants due to their high bioavailability. Also, taking high doses of one nutrient in the form of a synthetic supplement may prevent the absorption or metabolism of another. Since different foods contain different antioxidants, it is advisable to diversify your diet to get as many antioxidants as possible.
Antioxidants are important components of the diet as they boost the immune system and minimize cell damage by eliminating free radicals in the body. They also protect against premature aging and diseases such as cancer, heart disease and Alzheimer's. Although making dietary changes to include more antioxidant-rich foods may be beneficial, consult a registered dietitian or nutritionist before taking on a new diet.