Drug abuse remains a growing problem in the United States. A survey conducted by the Substance Abuse and Mental Health Services Administration (SAMHSA) in 2010 found that 8.9% of the population had used an illicit drug or abused a prescription medication. This figure represented an increase from previous years mainly due to the widespread prevalence of marijuana use and increasing prescription drug misuse. There are spots of good news, however. The same survey also found that the abuse of other illicit drugs, such as heroin and cocaine, had decreased in recent years. Nevertheless, the medical, social, and familial costs of substance use are enormous-nearly $200 billion a year according to the U.S. Department of Justice. Drug Abuse Sourcebook, Fourth Edition, provides updated information about the abuse of illegal drugs and the misuse of prescription and over-the-counter medications. It offers facts and statistics related to U.S. drug-using populations and presents details about specific drugs of abuse, including their health-related consequences, addiction potential, and other harms to individuals, their families, and communities. Drug treatment and recovery options are discussed, along with information on drug testing and drug-use prevention strategies for parents, employers, individuals, and others seeking help for themselves or a loved one. The book concludes with glossaries of terms related to drug abuse and directories of resources for additional help and information.