The largest, most rigorous independent study on Alcoholics Anonymous to date shows that AA can help people get sober, stay sober, drink less, and suffer fewer negative consequences of drinking, all while keeping health care costs down. Watch scientists John Kelly (Harvard/MGH) and Keith Humphreys (Stanford/VA) discuss their findings (published 3/11/20 by the Cochrane Collaborative), with commentary from psychologist Gabrielle Jones.