Free Radicals

Free radicals are volatile molecules. Because they are missing an electron from their outer electron shell, they are electrically unstable. To become stable, free radicals grab electrons from other molecules; although this stabilizes (neutralizes) the original free radical it creates a new free radical and begins a chain reaction known as free radical damage - the destruction of cellular tissue. This process, also called oxidation, comes in very handy when bacteria invade the body. In fact, it is the immune system's primary response to infection. Free radicals help destroy bacteria by literally ripping apart their cellular structures. The same process breaks down damaged tissues for removal from the body.
But what happens when infection/injury is gone and free radicals persist? This is a common problem. Free radicals that are left behind after an infection or injury cause damage to healthy tissues. However, a larger problem ensues when the immune system (perceiving a secondary threat), releases even more free radicals