Copper

Studies in people

• Open question

  High intake health effects⁴

  In men, long-term high copper intake changed some immune and copper-status measures, but what these changes mean for health is unknown.

How it’s made and used

• Diet and mineral intake³

  Americans may eat less copper than before as more processed food is eaten, but older measuring methods may have been wrong.

The signal at the top counts the findings in people and in animal and lab studies. A concern in studies of people outranks animal and lab studies, and “No concerns” needs at least one finding in people. When most findings in people point one way, the page leans that way (“Mostly”), and every finding is still shown. Findings whose study type is not stated are shown but not counted. This page is a reference, not medical advice. It describes what regulators and published research say. Talk to a doctor or dietitian about your own diet.