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United States Department of Agriculture

Agricultural Research Service

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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.

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Last Modified: 8/13/2016
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