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.

Cannabidiol, a.k.a. CBD, is a marijuana extract associated with therapeutic benefits. We gathered research that evaluates these claims.

New research indicates that safe injection sites help people who use drugs access treatment.

Research on the history, pharmacology and toxicology of kratom, a "herbal high" that's new to the U.S.

One-third of African American men have been convicted of a felony, according to data recently published in Demography. For white men, the figure is less than half that.

A new working paper from scholars at the University of Connecticut and Georgia State University finds that alcohol sales decreased in states that have legalized medical marijuana since 2006. As of late 2017, medical marijuana is legal in 29 states and the District of Columbia; recreational marijuana is legal in eight states and D.C.

This collection of research and reports examines physician-assisted suicide in the U.S. and compares American policies and trends with those in Europe.

E-cigarettes come in over 7,000 flavors. If the flavors were banned, as American regulators wish, more people are likely to smoke traditional cigarettes.

Americans are not all enjoying the same life expectancy gains. The differences, when mapped by county, could have predicted the 2016 presidential election.

Marijuana strains grown for potency contain less of a natural compound that seems to protect adolescent brains.