Calcium is a very important element in mineral salts. Of the total salts found in the body, about 50% is made of calcium, about 1300 grams of calcium is found in the body of a healthy person. Of which about 18% of the total amount is found in bones and teeth, the remaining amount is included in blood and muscles. Calcium plays a main role in development of body. Mineral salts are useful for the body's defence and immunity, for carrying out many chemical reactions, etc.