Supplements may help people for a number of reasons. They can help prevent vitamin and mineral deficiencies when the diet is not adequate in providing all necessary nutrients. It is important to have the correct balance of vitamins and minerals.

Minerals cannot be synthesised by the body, therefore the correct diet or extra supplementation is vital. Minerals are vital components of enzymes and are involved in every biochemical process of the body. They are vital for the transportation of oxygen, maintaining the nervous system and for the growth and health of bones and tissue.