Key facts and the latest scholarship on methamphetamine, a highly addictive drug that has recently made a resurgence.

A new study identifies one important driver of heroin overdoses in the United States: the reformulation of Oxycontin.

While the nation’s ongoing opioid epidemic is often discussed as a white issue, new research indicates that prescription opioid use in black adults is just as high.

2014 review of scientific literature on the health effects of electronic cigarette use, behavioral impacts on users and marketing efforts by e-cigarette companies.

2012 study in the Proceedings of the National Academy of Sciences on the potential relationship between the long-term use of marijuana and IQ declines.

2012 study in the Journal of the American Medical Association on the tripling of rates of babies affected by maternal opiate use over the past decade.

2012 report from the U.S. government's Center for Behavioral Health Statistics and Quality spotlighting data relating to children of alcoholics in the United States.

2011 study from the University of Bonn and SUNY in the Journal of Media Psychology on the connection between personality traits and time spent online.

2011 study published in the journal Addictive Behaviors on anti-drug television advertising and self-reported drug use in teenagers.

2011 federal government-sponsored research on prescription-drug use, both of legal and illicit substances, by U.S. adolescents.