Magnesium, New RDA* 375 mg.
All human tissues contain small quantities of magnesium. The adult human body contains about 25 g of this mineral, the greater part of which is present in bones in combination with phosphate and carbonate. Bone ashes contain less than one per cent magnesium. About one-fifth of the total magnesium in the body is present in the soft tissues inside the cells, where it is mainly bound to protein. The bones seem to provide a reserve supply of this mineral in case of a shortage elsewhere in the body.
Magnesium is a light, silver-white, malleable, and ductile metallic element. It burns with a very hot, bright flame and is used to form light-weight alloys. Biochemists call magnesium the 'cool, alkaline, refreshing, sleep 'promoting mineral'. It helps to keep one calm and cool during the sweltering summer months. Intake of diuretics and alcohol can render magnesium ineffective.
Magnesium is the eighth most abundant element in the earth’s crust. It does not occur as a pure metal in nature, but it is found in large deposits as magnesite, dolomite and other minerals.
*Sourced from EFSA WEBSITE