Antioxidants are chemicals that break down or neutralize the damaging effects of free radicals - chemicals produced as a byproduct of normal cellular metabolism. Under normal circumstances, there is a balance between the rate at which free radicals are produced and the rate at which they are eliminated by the action of antioxidants. Free radicals are destructive in that they cause oxidative damage to tissues - essentially causing tissues to rust like a piece of iron left outside in the weather. They damage proteins, fat and even our DNA. In fact, damage to our tissues by free radicals is thought to underlie the process of aging, a theory first described by Dr. Denham Harmon in his "free radical theory of aging" proposed in 1956. Indeed, Dr. Harmon laid the groundwork for the whole antioxidant industry when he demonstrated that free radicals are "quenched" by antioxidants.
*Note: excerpted from an article by David Perlmutter, MD, FACN, ABIHM Free Radicals: How They Speed the Aging Process originally published in The Huffington Post on January 25, 2011.
