Calcium is the most common mineral in the human body. Up to 99% of calcium is found in hard tissues (teeth and bones), while the remainder is distributed widely throughout the soft tissues and organs. It is essential to the growth and maintenance of strong, healthy bones, teeth and gums, and is also of the utmost importance for the maintenance of a regular heartbeat, the transmission of nerve impulses and proper blood clotting. Adequate calcium and vitamin D as part of a healthy diet, may reduce the risk of developing osteoporosis.