The latest edition of this well-respected book by C. Aaron McNeece and Diana DiNitto presents a comprehensive look at chemical dependency, covering the most recent issues in the areas of epidemiology, etiology, substance abuse policy and treatment. Taking a systems perspective Chemical Dependency: A Systems Approach, Third Edition, presents all major theories of addiction, as well as the major physiological and psychological results of substance abuse, including fetal alcohol syndrome. Coverage of the latest developments in treatment and research incorporates the most recent findings on genetic causes of alcoholism. This edition includes an up-to-date discussion of the most recent trends in designer drugs, to account for the considerable frequency in which drug use patterns occur. In addition, the most recent policy changes at the state, federal, and international levels have been added.