Calcium is a mineral essential for the purpose of performing various functions in the body. The most obvious and well-known function is to strengthen the bones. However, it is also involved in other functions such as cell-division. While the essential daily intake of calcium ranges around 1000 mg per day, an excess of it can lead to the development of calcium deposits in various parts of the body. These include calcium deposits on bones, in the lungs, heart, joints, and even the skin.