Calcium is the most abundant mineral in the human body.
Of the two to three pounds of calcium contained in the average body, 99% is located in the bones and teeth.
Calcium is needed to form bones and teeth and is also required for blood clotting, transmission of signals in nerve cells, and muscle contraction.
The importance of calcium for preventing osteoporosis is probably its most well-known role.
Calcium also appears to partially bind some fats and cholesterol in the gastrointestinal tract.
Perhaps, as a result, some older research suggests that calcium may help lower cholesterol levels.