Your body cannot make minerals, so it is essential you get them all from your food. Minerals are classified as micronutrients, because you do not need too much of them, but that does not negate their importance. Like vitamins, minerals do not contain any calories so they are not a direct source of energy; however, they work with other nutrients so that your body functions properly. You need to take in 16 different minerals each day through your diet for optimal health.