Though some say weed can improve mood and energy, there are negative effects on cognitive skills — especially in younger ...

The largest study of adolescent brain development ever conducted in the United States has produced a finding that parents in ...

Subscribe to The Post Most newsletter for the most important and interesting stories from The Washington Post. Marijuana use seems to be more popular (or at least more openly talked about) than ever.

Teen cannabis use is linked to slower cognitive growth, especially memory, with THC as a likely contributor during key ...

Marijuana is far from a “silver bullet” for various illnesses, but it has some promising applications, scientists say ...

Dr. Francesca Filbey, a professor of psychology at the University of Texas at Dallas, has studied the effects of cannabis on ...

Researchers find marijuana use in teens tied to slower gains in memory, focus, and thinking skills.

Scientists found that people who use both cannabis and tobacco show a distinct brain pattern tied to mood and stress regulation. Their scans revealed higher levels of an enzyme that reduces a natural ...

Plenty of studies have found out what sort of impact smoking weed is having on the human brain as thousands of scans have ...

A systematic review reveals adolescent cannabis use alters brain structure, elevates addiction risk, and impacts cognitive ...

Studies show THC can influence multiple stages of memory formation, shaping not just what we remember—but how accurately we ...

Cannabis contains various molecules which bind to receptors in the brain, aptly called "cannabinoid receptors." Familiar ligands (which bind to those receptors) include THC (tetrahydrocannabinol) and ...