Calcium plays a crucial role in the body, primarily in supporting bone health. It is a fundamental mineral required for forming and maintaining strong bones and teeth. Beyond skeletal health, calcium is essential for muscle contraction, nerve transmission, and blood clotting. The body regulates calcium levels through hormonal actions involving the parathyroid hormone and vitamin D. Insufficient calcium intake can lead to conditions like osteoporosis, highlighting the importance of adequate dietary sources such as dairy products, leafy greens, and fortified foods.