An official website of the United States government
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
 Image Number K5106-1 |
Dietary copper research indicates that the upper limit currently recommended for adults may be too high. Rich sources of copper include nuts, sunflower seeds, lobster, green olives, wheat bran, liver, blackstrap molasses, cocoa, oysters, black pepper.
Photo by Keith Weller.
