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Copper: Copper is a mineral that occurs naturally in many foods, including vegetables, legumes, nuts, grains, and fruits, as well as shellfish, avocado, and beef (organs such as liver). Because copper is found in the earth's crust, most of the world's surface water and ground water used for drinking purposes contains small amounts of copper.Copper is involved in numerous biochemical reactions in human cells. Copper is a component of multiple enzymes, is involved with the regulation of gene expression, mitochondrial function/cellular metabolism, connective tissue formation, as well as the absorption, storage, and metabolism of iron. Copper levels are tightly regulated in the body. Read more
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