Calcium is the mineral essential for strong bones. It plays a critical role in the development, growth, and maintenance of bone structure and strength throughout life. Approximately 99% of the body's calcium is stored in bones and teeth, providing them with rigidity and support. Adequate calcium intake during childhood and adolescence is crucial for achieving peak bone mass, while sufficient levels in adulthood help prevent bone loss and conditions such as osteoporosis. Dietary sources of calcium include dairy products, leafy green vegetables, and fortified foods. Consuming the right amount of calcium, along with vitamin D, is vital for optimal bone health.