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Manganese is a part of many enzyme systems, including the enzymes involved in blood sugar control, energy metabolism, and thyroid hormone function. Manganese also participates in the antioxidant enzyme, superoxide dismutase, or SOD.
Manganese is involved in the formation of bone and is a component of many enzymes that play important roles in protein, cholesterol and carbohydrate metabolism.hat are the best food sources? Whole grains contribute the most manganese to U.S. diets, followed by tea. One cup of green tea contains about 0.41-1.58 milligrams of manganese and one cup of black tea contains about 0.18-0.77 milligrams.