There are approximately 75 to 150 mg. of copper in the adult human body. Newborn infants have higher concentrations than adults. Liver, brain, kidney, heart, and hair contain relatively high concentration. Average serum copper levels are higher in adult females than in males.

Serum copper levels also increase significantly in women both during pregnancy and when taking oral contraceptives.

This mineral helps in the conversion of iron into haemoglobin. It stimulates the growth of red blood cells. It is also an integral part of certain digestive enzymes. It makes the amino acid tyrosine usable, enabling it to work as the pigmenting factor for hair and skin. It is also essential for the utilisation of vitamin C. Copper is found in most foods containing iron, especially in almonds, dried beans, peas, lentils, whole wheat, prunes and egg yolk. The recommended dietary allowance has not been established but 2 mg. is considered adequate for adults.

A copper deficiency may result in bodily weakness, digestive disturbances, and impaired respiration.