Calcium, Magnesium, and Zinc are needed for the maintenance of normal bones. Calcium, Magnesium, and Zinc have a role in the process of cell division and specialization. Calcium and Magnesium are needed for the maintenance of normal teeth. Calcium and Magnesium contribute to normal muscle function. Calcium also contributes to normal blood clotting, energy-yielding metabolism, neurotransmission, and function of digestive enzymes. Magnesium contributes to a reduction of tiredness and fatigue, electrolyte balance, normal energy-yielding metabolism, normal functioning of the nervous system, and normal protein synthesis. Zinc contributes to normal DNA synthesis, acid-base metabolism, carbohydrate & macronutrient metabolism, and protein synthesis. Zinc contributes to the maintenance of normal hair, nails, and skin. Zinc contributes to the protection of cells from oxidative stress.