'The 3rd edition of this authoritative book is remarkably up-to-date and reflects well the current state of play in both the neuroscience and clinical approaches at the interface between mental health and cannabis. The updated textbook covers the essentials of cannabis and health and, most importantly, policy in an integrated and impressively comprehensive manner. Each chapter includes both important recent publications as well as seminal papers, particularly important given the evolution of information on cannabis and contemporary considerations for public health. The chapters, authored by world renowned experts, are well written and I particularly liked the explicit tables/ boxes. My distinguished colleagues and friends Drs D'Souza, Castle, and Murray are to be congratulated for providing us with this outstanding, authoritative, and remarkably contemporary book on mental health and cannabis.' Peter F. Buckley, M.D., Chancellor, The University of Tennessee Health Science Center, Memphis, Tennessee