Study of 11,000 US Teens Links Cannabis Use to Slower Brain Development

In a long-term U.S. study of 11,036 adolescents, cannabis use was linked to slower gains in memory, attention, and other cognitive skills.

THC exposure showed the strongest connection to weaker memory performance, suggesting a bigger impact on teen brain development.

Researchers say the findings support public health guidance that adolescents should avoid cannabis.

Teen cannabis use may affect brain maturation as well as school performance and everyday functioning.