Mark S. Gold, MD, is a Distinguished Professor of Psychiatry, Neuroscience, and Community Health & Family Medicine at the University of Florida College of Medicine. He is also a member of the McKnight Brain Institute and is Chief of the Addiction Medicine Division in the Department of Psychiatry. He has written over 900 medical articles, chapters, and abstracts in health professional journals on wide variety of psychiatric research subjects, and authored 12 professional books, including practice guidelines, ASAM core competencies, and medical textbooks for primary care professional. He is also author of 15 general audience books. As a researcher and inventor, he worked for nearly 30 years to develop models for understanding the effects of tobacco and other drugs on the brain and behavior.

• Introduction; A Review of Performance-Enhancing Drugs in Professional Sports and Their Spread to Amateur Athletics, Adolescents, and Other At-Risk Populations; Nicotine: Risks and Performance-Enhancing Effects; Anabolic Steroid Abuse: Neurobiological Substrates and Psychiatric Comorbidity; Performance Enhancement and Adverse Consequences of MDMA; Performance Enhancing, Non-Prescription Use of Erectile Dysfunction Medications