Clinical studies show that Vitamin K plays a vital role in maintaining your bones health. It also functions as a clotting element in the arteries. Poor vitamin K levels affect health of the entire cardiovascular system. Without adequate vitamin K, calcium in the blood can bind to the arterial wall, resulting in calcification. As we age, even low vitamin K deficiency can pose risks to the vascular system. In post-menopausal women, poor vitamin K status is shown to be associated with increased bone loss.