Dr. Simeon Margolis, MD, Ph.D., is an award-winning professor at the Johns Hopkins University School of Medicine, where he serves as Professor Emeritus of Medicine and Biological Chemistry. He received his bachelor's, medical, and doctoral degrees from The Johns Hopkins University. An expert on the prevention of coronary heart disease and the control of cholesterol metabolism, he was the Director of the Division of Endocrinology and Metabolism in the Department of Medicine at Johns Hopkins.