Antioxidants are substances that reduce oxidative stress in the body. They include vitamins and iron-regulating nutrients, which bind to iron in the body and prevent excessive accumulation. Foods rich in antioxidants include green tea, nuts, onions, coffee, oranges, broccoli, and tomatoes. Polyunsaturated fatty acids, such as omega-3 and omega-6, are found in olive and grapeseed oil.
