Statins Block Triggers of Blood Clotting (image) University of North Carolina Health Care Caption In this image, blood clot formation in atherosclerotic blood vessels cuts off the blood supply. Triggers of blood clotting, such as tissue factor, are blocked by statins. Credit Nigel Mackman, Ph.D., UNC McAllister Heart Institute Usage Restrictions None Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.