Drug abuse is a longstanding and painful problem that can lead to devastating effects for users, addicts, and their families and friends. Studies show that a large percentage of junior high and high school students have been exposed to, or have experimented with, illegal drugs. The most commonly abused drugs are alcohol, marijuana, and cocaine, but as trends change, new drugs become more and more popular. Abuse of methamphetamines and prescription drugs is currently on the rise, and though anti-drug messages are distributed widely, young people continue to try drugs for the first time every day. With approximately 200 entries, this title covers the full range of illegal and legal drugs and how they impact society. Taking a global perspective, this new title looks at the worldwide drug trade and the effects of drug abuse in countries and cultures around the world, as well as in the United States. This comprehensive reference examines various types of drugs and how they function, risks, causes and consequences of abuse, social issues, psychiatric issues, means of prevention, law enforcement efforts, and drugs in special social groups. Appendixes provide statistics, directories of helpful groups and organizations, and resources for further research. Topics include: Accidental overdose deaths; Barbiturates; Club drugs; Drug dependence; Gangs and drugs; Narcotics; Opiates; Pregnancy and substance abuse; Prescription drug abuse; Treatment; Violence; and more.