Just one dose of psilocybin, a psychedelic drug in some mushrooms, repaired neural connections in mice that had been lost due to depression.

Regular marijuana users are at higher risk of substance abuse, mental health issues, and not being in a relationship by 35, new research finds.

Marijuana use is lowest at the beginning of the year. Researchers think New Year's resolutions may play a role.

A non-hallucinogenic version of the psychedelic drug ibogaine called TBG has potential for treating addiction and depression, research with mice suggests.

Archaeologists have long debated the relationship of psychedelics to rock art. New evidence from Pinwheel Cave in California clarifies the connection.

Psilocybin, the key hallucinogenic ingredient in "magic mushrooms," could be a treatment for major depression, research suggests.

New research finds a link between using marijuana during pregnancy and the risk of psychotic-like experiences, depression, and social problems for kids.

The relationship between smoking, substance use, and mental health among sexual and gender minority populations suggest a need for holistic treatment.

With clubs and festivals shut down, a new study looks at how people have moved to virtual raves and Zoom happy hours and how that's changed drug use.

With clubs and festivals shut down, a new study looks at how people have moved to virtual raves and Zoom happy hours and how that's changed drug use.