Mayo Clinic Health Library

Calcium: Building better bones

Updated: 12-17-2010

Calcium is a mineral important for developing and maintaining strong bones. If you don't get enough calcium, you increase your risk of fractures and osteoporosis. Food sources include dairy products, fish with soft bones that you can eat, and calcium-fortified foods. Calcium supplements can help fill any gaps left by your diet. Just don't overdo the calcium. Too much calcium can do more harm than good.