Free radicals – nasty toxic molecules that have long been known to damage DNA, proteins, lipids and other essential biological molecules. Their contribution to premature aging and chronic degenerative illness is well-established. But is it the only way to perceive free radicals? As we are about to find out, the fear of free radicals may actually be exaggerated. While free radicals ride on a lot of negative hype, the truth is they are a crucial part of life and play an important role in many biological functions in small amounts.