What is one of the main functions of vitamin K?

Vitamin K primarily plays a crucial role in the process of blood clotting and the metabolism of bone proteins. This vitamin is essential for the synthesis of proteins known as coagulation factors, which are necessary for the proper blood coagulation process. Without adequate vitamin K, the body cannot form blood clots effectively, leading to increased bleeding risks.

In addition to its role in blood clotting, vitamin K is vital for the metabolism of bone proteins, particularly osteocalcin. This protein is important for bone mineralization and helps to bind calcium to the bone matrix, contributing to bone strength and health. Thus, vitamin K is integral to maintaining both cardiovascular health through its blood clotting function and skeletal health through its involvement in bone metabolism.