Free Radicals Such As Reactive Oxygen Species (Ros) Are Produced and Quenched During Normal Cellular Metabolism In a Balance In Human Body. the Imbalance Generates Oxidative Stress Which Is Associated With Weak Immune System Causing Several Diseases. Antioxidants Play a Crucial Role In Reducing This Oxidative Stress By Terminating the Chain Reactions of Free Radicals and Reinstating the Balance.