Zinc of zinc oxide,zinc sulfate is an essential trace element for humans, animals and plants. It is vital for many biological functions and plays a crucial role in more than 300 enzymes in the human body. The adult body contains about 2-3 grams of zinc. Zinc is found in all parts of the body: it is in organs, tissues, bones, fluids and cells. Muscles and bones contain most of the body’s zinc (90%). Particularly high concentrations of zinc are in the prostate gland and semen.
High concentrations of zinc are found in the retina. With age the retinal zinc declines which seems to play a role in the development of age-related macular degeneration (AMD), which leads to partial or complete loss of vision. Zinc may also protect from night blindness and prevent the development of cataracts.
