The 10-volume "Health Facts" series is intended to supplement health education curricula and provide a handy reference for individuals who would like additional background information on particular health topics. The emphasis is placed on topics and examples relevant to youth of middle and high school age. The seven sections in this book on drug use prevention provide educators with basic facts about how drugs work, including specific information on a variety of drugs, such as tobacco, alcohol, and psychoactive drugs. The book includes discussion of drug dependence, addiction, and treatment; family and peer influences which lead to drug use; prevention and treatment; and the costs of drug use. An easy to read reference format offers clear, concise data intended to familiarize educators with the most important facts about the issues and concerns. A glossary and a list of resources complete the volume. (LL)