Opioids

The number of people dying from cocaine overdoses in the United States is on the rise, and a new study suggests why: People are using cocaine and opioids together.

The chemicals in the brain linked to the pleasure people get from things like sex and drugs also play a role in how people enjoy music, a new, small study from Canada finds.

A marijuana ingredient may help heroin users resist the urge to use the drug and alleviate withdrawal symptoms, but more research should be done in this area, researchers say.

More than a dozen people in Massachusetts suddenly developed severe amnesia, but there was no clear cause of their memory loss.

A middle-age man in Canada with oral cancer found that medical cannabis oil may have helped to slightly reduce the size of a wound on his cheek.

The number of people in the U.S. who died from an overdose of the opioid painkiller fentanyl more than doubled in just a single year, according to a new report.

Teen use of many illegal and legal drugs — including ecstasy, cocaine, alcohol and tobacco — is now at record lows.

Scientists have turned to marijuana-like synthetic compounds to provide opioid-like pain relief without the risk of addiction or a high.

Teens who take opioid painkillers without a prescription also often use cannabis, according to a new study.