Drugs comprise an array of chemical compounds that affect the human mind and body, and they occur in natural and synthetic, and licit and illicit forms. They are produced, exchanged, and consumed for numerous reasons, including for use in recreational and religious settings as well as medicinal purposes. Drugs and drug use are central to human health, welfare, and custom, and hold high cultural and economic value. At the same time, they can cause profound public health issues such as HIV/AIDS that often relate to drug abuse and dependence and also issues of criminalization. ...