Over two million U.S. adults with cardiovascular disease have smoked marijuana, and the substance may carry increased cardiovascular risks.

A federal government database of doctors who provide medication-assisted treatment for opioid use disorder is rife with inaccurate contact information, research shows.

Research shows the extent to which doctors, nurse practitioners and physician assistants across the nation have oversupplied patients with opioids, spurring a national crisis.

Research for the first time shows a causal link between combat exposure and prescription painkiller misuse.

A recent study challenges the role that legalizing medical marijuana might play in easing the opioid epidemic.

Money and illegal drugs are inextricable. This roundup brings together recent research exploring the wide-ranging relationship between economics and drugs.

Benzodiazepine prescriptions are on the rise. We explain the anti-anxiety drugs' potential for abuse, addiction and overdose.

National rates of cocaine use have climbed in recent years, and the ubiquity of the highly potent synthetic opioid fentanyl has made the resurgence particularly deadly. We’ve summarized some of the latest research.

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

There is little evidence to suggest that fatal car accidents increase on April 20 (4/20), an annual holiday that celebrates marijuana.