According to the European Food Safety Authority’s (EFSA) official health claims, zinc contributes to:
The normal function of the immune system.
The protection of cells from oxidative stress.
The maintenance of normal hair, nails and skin.
The maintenance of normal testosterone levels in the blood.
Normal fertility and reproduction.
Normal cognitive function.
The maintenance of normal vision.
The maintenance of normal bones.
The normal metabolism of macronutrients, carbohydrates, fatty acids and vitamin A.
Normal DNA and protein synthesis.