Calcium is the essential mineral for maintaining strong bones and teeth. It plays a crucial role in the development and preservation of bone density, helping to prevent conditions such as osteoporosis. Additionally, calcium is necessary for muscle function, nerve signaling, and blood clotting. For optimal bone health, it's important to include calcium-rich foods in the diet, such as dairy products, leafy greens, and fortified alternatives. Ensuring sufficient calcium intake throughout life is vital for maintaining bone strength and preventing age-related bone loss.