Antioxidants protect cells from oxidative damage and help push back many of the normal age related diseases our pets suffer from. The amount of antioxidants normally produced by a dog or cat slowly increases from birth until adulthood (8 months – 1 ½ years) depending on the breed. At that point production amounts level off while the amount of free radicals continues to rise. The differential between the amount of free radicals and the available number of antioxidants is termed Oxidative Stress. It has been shown that the greater the level of oxidative stress the faster one might see the onset of age-related chronic debilitating diseases. More rapid aging has also been attributed to oxidative stress.