Dietary Supplement Foundational Gluten Free Copper is an essential trace mineral for bone health, connective tissue health, cardiovascular health, lipid metabolism, neurological health, and skin health. Because copper and zinc compete with each other for absorption, high amounts of zinc (for example, 50 mg daily for an extended time period) without copper can result in a copper deficiency. Although copper can have pro-oxidant capabilities, it also demonstrates antioxidant properties. Copper is a cofactor for the essential antioxidant superoxide dismutase, which is produced in the body as part of the natural antioxidant defense system. A deficiency of copper can render many cell types, including fats and blood cells, more susceptible to oxidation. In a clinical setting, copper supplementation protected red blood cells from oxidation.