Calcium Regulation Theory

Calcium Regulation Theory explains how the body maintains stable calcium levels in the blood and tissues. Calcium is vital for functions like muscle contraction, nerve signaling, and blood clotting. The body regulates calcium through hormones such as parathyroid hormone (PTH), calcitonin, and vitamin D. When calcium levels drop, PTH increases, releasing calcium from bones and enhancing absorption from the intestines. When levels are high, calcitonin helps lower them by promoting calcium storage in bones. This balance ensures that calcium remains within a healthy range, supporting critical physiological processes.