Main dietary sources of copper include organ meats, shellfish, nuts, seeds, whole grains, and legumes. Foods like liver and oysters are particularly rich in copper, supporting the body's requirements for this essential trace mineral. Copper plays a critical role in various physiological processes, including the production of red blood cells and the maintenance of collagen and elastin in connective tissues. Additionally, certain fruits and vegetables, such as avocados and mushrooms, also contribute to dietary copper intake. A balanced diet typically provides sufficient copper for healthy bodily functions.