Calcium, the most abundant mineral in the body, is found in some foods, added to others, available as a dietary supplement, and present in some medicines (such as antacids). Calcium is an essential mineral for human health, and circulates in blood and plasma as an electrolyte. It is required for critical metabolic functions such as vascular contraction and vasodilation, muscle function, nerve transmission, intracellular signaling and hormonal secretion. 99% of the body’s calcium supply is stored in the bones and teeth where it supports their structure and function. The calcium in bones also functions as the body’s primary storehouse of bio-available calcium, from where it is pulled as needed to maintain appropriate calcium levels in body fluids for supporting critical functions.

Access the entire article from National Institutes of Health by clicking here (external website will open in new tab)