Free radicals – those highly reactive and unstable molecules your body makes in response to everyday living – are responsible for your body’s aging. They attack your cells, including the mitochondria, membranes and DNA, leading to a condition called oxidative stress, which results in the production of even more free radicals. The presence of free radicals can lead to a condition called oxidative stress, which results in the production of even more free radicals. To protect itself against oxidative stress, your body makes antioxidants. One antioxidant in particular – your “master antioxidant” – has the power to help you age well. It’s called glutathione.