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: the anti-doping industry and performance and image enhancing drugs, steroids and gender, the use of cognitive enhancing drugs in academia, the use of sunless synthetic tanning products, the (online) trade of HEDs, regulations of the enhancement drugs market. This collection will serve as a reference for students, academics, practitioners, law enforcement and others working in this area to reflect on the current state of research and consider future priorities. This detailed exploration will provide a valuable knowledge base for those interested in human enhancement drugs, while also promoting critical discussion.