Stephen G. Young (born 1952) is an American physician-scientist known for investigating the human genetics and molecular physiology of apolipoprotein B, the intravascular lipolytic processing of triglyceride-rich lipoproteins by the lipoprotein lipase–GPIHBP1 complex, and the role of nuclear lamin proteins in health and disease.[1][2] Currently, he is a Distinguished Professor of Medicine and Human Genetics at UCLA and works closely with two faculty colleagues (Loren G. Fong and Anne P. Beigneux).[1] He studied history at Princeton University and obtained a medical degree from Washington University in St. Louis.[1] He trained in internal medicine at UCSF and cardiovascular diseases at UCSD; he is board-certified in both disciplines.[1] He is an elected member of the National Academy of Sciences, the American Society for Clinical Investigation, and the Association of American Physicians.[3][4][5] He is a recipient of the Ernst Jung Prize in Medicine and received an honorary doctorate in medicine from the University of Gothenburg in Sweden.[6][7]