You have more calcium in your body than any other mineral. Calcium has many important jobs. The body stores more than 99 percent of its calcium 
It is important to get plenty of calcium in the foods you eat. Foods rich in calcium include
- Dairy products such as milk, cheese, and yogurt
- Leafy, green vegetables
- Fish with soft bones that you eat, such as canned sardines and salmon
- Calcium-enriched foods such as breakfast cereals, fruit juices, soy and rice drinks, and tofu. Check the product labels.
The exact amount of calcium you need depends on your age and other factors. Growing children and teenagers need more calcium than young adults. Older women need plenty of calcium to preventosteoporosis. People who do not eat enough high-calcium foods should take a calcium supplement.