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Calcium is a mineral found in many foods. The body needs calcium to maintain strong bones and to carry out many important functions. Almost all calcium is stored in bones and teeth, where it supports their structure and hardness.The body also needs calcium for muscles to move and for nerves to carry messages between the brain and every body part.In addition, calcium is used to help blood vessels move blood throughout the body and to help release hormones and enzymes that affect almost every function in the human body.alcium is found in many foods. You can get recommended amounts of calcium by eating a variety of foods, including the following: 1  Milk, yogurt, and cheese are the main food sources of calcium for the majority of people in the United States.
Calcium is an essential body mineral, but excessive calcium can be harmful. About 99% of the body's calcium are stored in the bones. The rest is located in the blood and tis â¦ sue fluids.Calcium is necessary for blood clotting, containing cells, and neuromuscular functions.ithout the proper secretion of calcitonin, hypercalcemia occurs; a harmful rise in blood calcium level. Hypercalcemia can lead to kidney stones because the urinary system retains calcium, additionally increasing blood calcium levels.