Calcium is the mineral that is found most abundantly in the body. It is naturally available in several foods and is also present in certain drugs and medicines. It is necessary for vascular contractions and normal nerve and muscle function. Most of the calcium in the body is stored in our bones.

Food like milk, cheese, and yogurt are the best sources of calcium. It is also found in spinach, cabbage, broccoli, and kale. Calcium may also be found in several fruit juices and in tofu.

Calcium intake for regular adults is recommended to be 1000 mg for men and 1200 mg for women. It should be less than 700 mg for a year old baby and 1300 mg for children in the ages of 9-13 for their growth.

Deficiency of calcium causes weak bones which become brittle. Renal failure can also be caused. Less calcium leads to poor appetite, lethargy and most commonly Rickets. With a long period of time, inadequate calcium causes osteopenia and a higher risk of bone fractures.