Many years ago, public health and mental health were separated, probably so that mental health could achieve full status with other diseases. Later, mental health and substance abuse were separated, probably for the sake of substance abuse, which tended to be ignored by mental health. Public health methods had massive success in the developed world in eliminating or reducing the impact of infectious diseases (at least until the advent of HIV and bioterrorism) and has had some success with chronic diseases (heart disease, cancer). Public health and psychiatry especially merge when organizing efforts at preventing and treating substance abuse. Most diseases managed and treated by psychiatrists have uncertain combinations of genetic diatheses and environmental stress. In the instance of substance abuse, the balance of agent/host/environment permits intervention. That is to say, if you can keep substances away from vulnerable people, primary prevention is possible and early prevention indicated. Surely there is no better population to target than the young. Now comes a book that thoughtfully introduces approaches to the problem of substance abuse in adolescents.