Minerals help to regulate our metabolic processes. Minerals cannot be synthesised in sufficient quantities by the body and so they must be received from our diet (in trace quantities). Subsequently, those with poor diets (& not in some cases) may be deficient in certain minerals and suffer ill-effects associated with those deficiencies. Despite many active people having a healthy diet, active people are perhaps more aware of what effects depletion of certain minerals can cause, which can become more apparent with vigorous exercise, therefore, many sports people will supplement a multi-vitamin and mineral as a matter of course.
Dietary minerals are inorganic compounds. Some are scientific minerals, such as salt, whereas others are elements, such as zinc and magnesium.