Antioxidants are free radical scavengers; these free radicals may have adverse effects on human health. They can prevent oxidative damage that can result in diabetes, cancer and cardiovascular diseases. There are many studies and research work under progress to determine the true effectiveness of antioxidants.
Recent study on resveratrol (an antioxidant found in red wine and dark chocolates) has findings about beneficial effects on memory and learning patterns on mice. Antioxidants like melatonin also support eye health and protect against several kind of ocular disease. A study done by University of Buenos Aires shows its importance and its beneficial effects on overall well being.