Magnesium: biological information

Biological role of magnesium: magnesium is an important element for plants and animals. Chlorophylls (responsible for the green colour of plants) are compounds knonw as porphyrins and are based upon magnesium. Magnesium is required for the proper working of some enzymes. The adult daily requirement of magnesium is about 0.3 g day-1.

Levels in humans

Table: the abundances of the elements in humans.
Human abundance by weight 270000 ppb by weight
Human abundance by atoms 70000 atoms relative to C = 1000000

How much magnesium is in your body? Find out here.

You can use this form to calculate how much magnesium your body contains. Enter your weight in either kilograms or pounds and click the "Calculate" button. You must enter a number, not text! Elements for which there are no data will always give a value of zero for the weight, no matter what you put in the weight box.

Calculate how much magnesium is in your body
Enter your weight here: You contain about : grams of magnesium

Hazards and Risks

Hazards and risks associated with magnesium: magnesium metal is a major fire risk. Magnesium compounds are not normally particularly toxic.

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magnesium atomic number