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

A study of more than 11,000 teens finds cannabis use tied to slower gains in memory, focus and thinking speed as well as ...

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

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

Teenagers who begin using cannabis may experience slower development in key thinking and memory skills, according to ...

A large longitudinal study found that teens who begin using cannabis show slower cognitive development across memory, ...

It’s 4/20 - but U.S. teens should avoid cannabis unless they want to stunt their brain development, according to a new study ...

(Willie B. Thomas/DigitalVision/Getty Images) A long-term study of more than 11,000 children and teens has linked ...