What is the main function of Vitamin K?

Vitamin K plays a vital role in the body's ability to form blood clots, which is essential for wound healing and preventing excessive bleeding. This vitamin is crucial for the synthesis of certain proteins that are needed for coagulation, a complex process that helps stop bleeding by forming clots when necessary.

The presence of Vitamin K in the body is important, especially for individuals who may have clotting disorders or are at risk for bleeding complications. It is found in foods like leafy green vegetables, broccoli, and certain oils, ensuring that a diet rich in these items can help maintain adequate blood coagulation.

The other choices refer to functions that Vitamin K does not primarily influence. While digestion, immune support, and energy levels are vital aspects of overall health, they are not the main functions of Vitamin K. Thus, emphasizing its role in coagulation highlights the importance of this nutrient in maintaining cardiovascular health and managing bodily reactions to injury.