Calcium is an essential mineral needed every day for proper health. About 99% of the body?s calcium can be found in the bones and teeth. This mineral provides the building blocks that help keep bones and teeth strong and healthy.* In addition, calcium helps to support the health of other systems in the body, including the heart, musculoskeletal and nervous systems.* Adequate calcium as part of a healthful diet, along with physical activity, may reduce the risk of osteoporosis in later life.