Supplements come as chelated (nontoxic) copper. Copper is measured in micrograms (mcg). The RDA is the Recommended Dietary Allowance.
|
Group
|
RDA
|
|
Birth to 6 months*
|
200 mcg
|
|
Infants 7 to 12 months*
|
220 mcg
|
|
Children 1 to 3 years
|
340 mcg
|
|
Children 4 to 8 years
|
440 mcg
|
|
Children 9 to 13 years
|
700 mcg
|
|
Adolescents 14 to 18 years
|
890 mcg
|
|
Adults 19 years and older
|
900 mcg
|
|
Pregnant people
|
1,000 mcg
|
|
Breastfeeding people
|
1,300 mcg
|
*Adequate Intake (AI): Intake at this level is assumed to ensure nutritional adequacy (established when evidence is insufficient to develop an RDA).
Good dietary sources of copper include beef liver, nuts, beans, and mushrooms. Other sources include oysters and other types of shellfish, dark leafy greens, cocoa, and honey.
Copper is common in food sources. This is why copper deficiency is rare. However, the average American diet tends to be low in copper. Vegetarians often have higher copper levels than people who are not vegetarians. People who receive their nutrition by IV (intravenous) feeding (total parenteral nutrition) may need copper supplements.
Copper competes with zinc for absorption. So, high levels of zinc may cause a copper deficiency.
Copper deficiency can lead to a low white blood count. It can also make you more likely to get infections. It can also cause bone demineralization, which may cause osteoporosis.
Copper plays a role in melanin synthesis. Copper deficiency can cause problems with your skin and tissues. These can include defective collagen formation and problems with skin and hair pigmentation.
Copper deficiency can also keep your immune system from working well. This is due to a reduced energy metabolism. Other symptoms of copper deficiency may include arthritis, inflammation, and anemia. They can also include weakening of connective tissue and heart damage.