What is copper?

Copper is an essential trace element that the body needs in small amounts to maintain numerous vital processes. It plays a central role in energy metabolism, blood formation, connective tissue development, brain function, and protecting cells from oxidative stress.

Although copper is present only in tiny amounts - around 50–100 milligrams throughout the body - it is essential for the proper functioning of many enzymes. It acts as a cofactor for enzymes involved in energy production, iron utilization, pigment formation, and antioxidant protection.

Copper is found in numerous foods, particularly nuts, seeds, whole-grain products, organ meats (liver), seafood, cocoa, and legumes.

How does copper work?

Copper is a component of several enzymes, known as cuproenzymes, which are crucial for metabolism and cellular health.

Energy production and metabolism:
Copper is a component of the enzyme cytochrome c oxidase, which is involved in the production of ATP in the mitochondria - the “powerhouses” of cells. Without copper, cellular respiration cannot function optimally, which can negatively affect energy, concentration, and performance.

Iron metabolism and blood formation:
Copper is necessary for the conversion of iron into its usable form and is therefore indirectly required for the formation of hemoglobin. Copper deficiency can therefore cause symptoms similar to iron deficiency, including fatigue, pallor, and anemia.

Connective tissue, skin, and bones:
Copper activates the enzyme lysyl oxidase, which is involved in collagen and elastin formation - two essential structural proteins that keep the skin, blood vessels, bones, and joints stable and elastic. Copper therefore contributes to healthy skin, firm tissue, and resilient bones.

Antioxidant cellular protection:
Copper is a component of the enzyme superoxide dismutase (SOD), which neutralizes free radicals and protects cells from oxidative damage. Copper thus makes an important contribution to slowing aging processes and protecting against inflammation.

Nervous system and brain:
Copper is necessary for the formation of the neurotransmitter dopamine and supports the myelination of nerve fibers. It therefore plays a role in mental clarity, concentration, and emotional stability.

Pigment formation:
Copper activates the enzyme tyrosinase, which is involved in the formation of melanin, the pigment responsible for skin and hair color. A deficiency may therefore contribute to pale skin or premature graying of the hair.

Benefits of copper

  • Supports energy production in cells

  • Promotes blood formation and iron utilization

  • Contributes to healthy bones, skin, blood vessels, and connective tissue

  • Acts as a powerful antioxidant and protects cells from free radicals

  • Supports the nervous system and brain function

  • Promotes pigment formation in the skin and hair

  • Strengthens immune defenses and regenerative processes

Possible side effects and interactions

Copper is generally well tolerated as long as levels remain within the physiological range. The recommended daily amount is approximately 1–1.5 mg.

Copper deficiency is rare, but it can result from an unbalanced diet, long-term use of high-dose zinc supplements, or intestinal absorption disorders. Symptoms of deficiency include fatigue, anemia, weakened immunity, brittle bones, skin changes, or neurological disorders.

Excess copper, on the other hand, can be toxic. Excessive amounts - for example, from contaminated drinking water, dietary supplements, or metabolic disorders such as Wilson’s disease - can cause nausea, liver damage, or oxidative stress.

Copper and zinc interact closely: Persistently high zinc intake can block copper absorption, which is why maintaining a balanced ratio of both trace elements is important.

Conclusion

Copper is a versatile trace element that is essential for energy, blood formation, skin, connective tissue, and cellular protection. It supports the body in producing energy, protects against oxidative stress, strengthens bones and blood vessels, and promotes healthy skin structure. Both deficiency and excess can significantly disrupt metabolism - therefore, a balanced ratio, particularly with zinc and iron, is crucial for health, vitality, and regeneration.

Sources

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  2. Prohaska JR. (2011): Impact of copper deficiency in humans. Ann N Y Acad Sci, 1251, 1–8.

  3. Uriu-Adams JY, Keen CL. (2005): Copper, oxidative stress, and human health. Mol Aspects Med, 26(4–5), 268–298.

  4. Linder MC, Hazegh-Azam M. (1996): Copper biochemistry and molecular biology. Am J Clin Nutr, 63(5), 797–811.