The mineral crucial for maintaining bone density is calcium. Calcium plays a vital role in developing and maintaining strong bones, preventing conditions like osteoporosis, especially in later years. Alongside vitamin D, which facilitates calcium absorption, maintaining appropriate calcium levels through diet or supplements is essential for skeletal health. Foods rich in calcium include dairy products, leafy green vegetables, and fortified foods. Regular weight-bearing exercise also complements dietary intake, further enhancing bone strength and overall skeletal integrity.