Copper is a key mineral in many different body systems. It is central to building strong tissue, maintaining blood volume, and producing energy in your cells. Yet, for all its critical importance, you don't have much copper in your body—barely more than the amount found in a single penny. And those pennies in your pocket are only 2.5% copper by weight.
In the foods we commonly eat, there are only very small amounts of copper. As much as any dietary mineral, the amount of copper you eat is directly related to the amounts of minimally processed plant foods you get every day.
Of the World's Healthiest Foods, 12 are rated as excellent sources of copper, 37 are very good, and 42 are rated as good.