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Mineral functions and sources. Calcium:  needed for healthy bones and teeth, normal blood clotting, and nervous system functioning.  sources: dairy products, broccoli, cabbage, kale, tofu, sardines and salmon.
The body needs many minerals; these are called essential minerals. Essential minerals are sometimes divided up into major minerals (macrominerals) and trace minerals (microminerals). These two groups of minerals are equally important, but trace minerals are needed in smaller amounts than major minerals. The amounts needed in the body are not an indication of their importance. A balanced diet usually provides all of the essential minerals. The two tables below list minerals, what they do in the body (their functions), and their sources in food.