That link states, &quot;While it’s true that the package of antioxidants, minerals, fiber, and other substances found naturally in fruits, vegetables, and whole grains helps prevent a variety of chronic diseases...&quot;<p>However, has even that much been proven? We know eating fruits and vegetables is good for you, and we know that in vitro, antioxidants help prevent damage to cells from free radicals. But considering that experiments with antioxidant supplementation have failed, do we really know that it&#x27;s the antioxidants in fruits and vegetables that make them good for you?