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

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

Youth cannabis use between ages 9 and 17 years is associated with slower cognitive development during a time of key brain development.

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 ...

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

While some of us enjoy curling up with a good book, others prefer watching a series or playing video games. But from the ...

Adolescence is widely thought to be a time when the brain trims away excess neural connections, refining circuits through synaptic pruning. New research now suggests this view may be incomplete.