Minerals

Manganese, copper and potassium are abundant in yams, with a 1-cup serving providing roughly 20 percent of each of these essential minerals. The purpose of dietary manganese is not completely understood, says the Texas Heart Institute, although it is essential for good health and may help detoxify your body. Copper helps your body produce proteins such as hemoglobin, elastin and collagen. Potassium is involved in vital processes including energy production, muscles contraction and nerve impulses.