What is the main role of vitamin K in the body?

The main role of vitamin K in the body is to assist in blood clotting. Vitamin K is essential for the synthesis of certain proteins, known as clotting factors, which are necessary for the blood coagulation process. These proteins help prevent excessive bleeding when injuries occur by enabling the blood to clot effectively. Without sufficient vitamin K, the body would struggle to form proper clots, leading to increased bleeding and difficulty in wound healing.

While vitamin K does play a minor role in enhancing bone health by aiding in the regulation of calcium in bones and blood, its most critical and well-established function is related to blood coagulation. In addition, while there are vitamins and nutrients that support metabolism and immune function, these are not the primary roles attributed to vitamin K. Thus, the focus on blood clotting accurately captures the crucial importance of vitamin K in maintaining proper physiological function.