Zinc is a mineral that is involved in thousands of bodily functions and this is the only metal, which appears in all enzyme classes. Zinc has a role in the process of cell division and in the protection of cells from oxidative stress. It contributes to normal protein synthesis and to the maintenance of normal testosterone levels in the blood and also to normal fertility and reproduction. Zinc helps the normal functioning of the immune system and also contributes to normal vision and the normal metabolism of carbohydrates and fatty acids