The Protective Wall of Human Community: The New Evidence on the Clinical and Public Health Utility of Twelve-Step Mutual-Help Organizations and Related Treatments.

Mutual-help organizations (MHOs) such as alcoholics anonymous (AA) are the most commonly sought source of help for alcohol and other drug (AOD) problems in the United States. Popularity, however, is not commensurate with efficacy; hence, following a call for more rigorous research on AA and 12-step treatments from the Institute of Medicine in 1990 a flurry of clinical trials, cost-effectiveness analyses, and mechanisms studies, have been published during the past 30 years. This body of work has now revealed the true clinical and public health utility attributable to these freely available resources in aiding addiction remission and recovery. AA, and possibly similar organizations, may be the closest thing public health has to a "free lunch" in terms of their ability to facilitate higher rates and longer durations of sustained remission while substantially reducing health care costs.