Toxins are noxious or poisonous substances which can be harmful to the body.

     Although mostly of plant or animal origin toxins can also include inorganic elements or compounds some of which are essential and form the mineral constituents of cells. These compounds or trace elements include aluminium, calcium, phosphorus, potassium, sulphur, sodium, chlorine, magnesium, iron, fluorine, iodine, copper, manganese, and zinc. Whilst they mostly exist in a harmonious stability, an excess of one element, such as aluminium, can be harmful to the body.