Despite increasing interest in the use of human enhancement drugs (HEDs), our understanding of this phenomenon and the regulatory framework used to address it has lagged behind. Encompassing public health, epidemiology, neuroethics, sport science, criminology, and sociology, this book brings together a broad spectrum of scholarly insights and research expertise from leading authorities to examine key international issues in the field of HEDs. As "traditional" and other "new" drug markets have occupied much of the academic attention, there has been a lack of scholarly focus on human enhancement drugs. This book provides readers with a much-needed understanding of the illicit drug market of HEDs. The authors, from a variety of cultural contexts, disciplines and perspectives, include both academics and practitioners. Topics explored in this collection amongst others include: