Calcium plays several vital roles in the body beyond bone health. It is essential for muscle contraction, nerve transmission, and the secretion of hormones. Adequate calcium levels help maintain a healthy blood pressure and support the functioning of many cellular processes. Additionally, calcium is critical for blood clotting, aiding the healing of injuries. A deficiency can lead to various health issues, including muscle spasms and an increased risk of injury. Ensuring sufficient calcium intake from dietary sources or supplements is necessary for overall health.