Stephen G. Young, M.D. is a Distinguished Professor of Medicine and Human Genetics at the University of California, Los Angeles (UCLA). Early in his career, Dr. Young investigated the role of apolipoprotein (apo-) B in lipoprotein metabolism and atherosclerosis. In recent years, Dr. Young’s work at UCLA has worked on two research areas—basic mechanisms of plasma triglyceride metabolism and the functions of nuclear lamins in health and disease. His laboratory identified an endothelial cell protein, GPIHBP1, that is crucial for transporting lipoprotein lipase (LPL) to the capillary lumen. His group also showed that the LPL–GPIHBP1 complex on endothelial cells is crucial for the margination of triglyceride-rich lipoproteins along the capillary lumen. Dr. Young’s group has also led the way in understanding the importance of posttranslational modifications of nuclear lamins in health and disease. Dr. Young has published numerous papers in top scientific journals, lectured at national and international meetings, and been awarded several research awards, including the Ernst Jung Prize in Medicine in 2010. He is a member of the US National Academy of Sciences.