Zinc is an essential trace element and an alkaline mineral. Zinc is present in all tissues of the body and is known to play an important role in all human living cells. It is necessary for the activity of over 300 enzymes, which promote biochemical reactions in your body. Zinc plays important roles in a wide range of key metabolic processes, including carbohydrate metabolism, DNA synthesis, protein synthesis, protein digestion, bone metabolism, and the synthesis of brain receptors and neurotransmitters.