A research team has decrypted the one of the biological mechanisms about Vitamin D deficiency triggering a range of diseases. Vitamin D regulates the elasticity of blood vessels and thus also affects blood pressure amplitude. The two primary authors molecular biologist Olena Andrukhova and medical doctor Svetlana Slavic of the Institute of Physiology Pathophysiology and Biophysics at the Vetmeduni Vienna found that prolonged vitamin D deficiency can stiffen blood vessels. Examining the aorta an elastic blood vessel that expands with each pulse of blood and then constricts again the researchers showed that vitamin D deficiency makes the vessel less flexible.(Read: