Few substances have been researched as extensively, and debated as fiercely, as cannabis. In Marijuana on My Mind: The Science and Mystique of Cannabis (Cambridge University Press, 2022), psychiatrist Timmen Cermak offers a balanced, science-based analysis of how marijuana affects people physiologically, psychologically, and spiritually. Cermak draws on current understandings of the brain and nervous system to describe how cannabis achieves its effects as well as how it can pose risks to some individuals. Cermak believes that most people can enjoy cannabis safely as long as they apply sensible guidelines and precautions. Far different in tone from the heated polemics that cannabis can inspire, Marijuana on My Mind is a deeply informed assessment of what we know about cannabis and how people can deploy that knowledge wisely. Steve Beitler’s work in the history of medicine focuses on how pain has been understood, treated, experienced, and represented. His recently published articles examined the history of opiates in American football and surveyed the history of therapeutic drugs. He can be reached at steve@stevebeitler.com