Calcium is the mineral crucial for maintaining strong bones and teeth. It plays a vital role in bone structure, helping to keep bones dense and healthy. Adequate calcium intake is especially important during critical growth periods, such as childhood, adolescence, and early adulthood, to help build optimal bone mass. Insufficient calcium can lead to osteoporosis and increased fracture risk later in life. Good dietary sources of calcium include dairy products, leafy greens, and fortified foods, making it essential for overall bone health and strength.