Dr. Mark Houston is a Clinical Instructor at George Washington University. He is also Director of the Hypertension Institute and Vascular Biology and Medical Director of the division of Human Nutrition at St. Thomas Medical Group, St. Thomas Hospital and Health Services in Nashville, TN. He is on the faculty of A4M for the FAARM and the Metabolic Medicine Institute (MMI) and George Washington University, and directs the Cardiovascular modules. He has also published seven best-selling books on vascular function. Dr. Houston has an active clinical practice, teaches, and does clinical research at St. Thomas Medical Group and Hospital. He founded the Hypertension Institute in 2000.