Early Cannabis Use Linked to Reduced Cognitive Development in Adolescents

Teens who start using cannabis may experience slower growth in memory, attention, language, and processing speed. Their abilities often developed normally at first, then began leveling off while nonusers continued improving. THC appeared to be the most likely driver, especially for worsening memory.

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Adolescents who initiate cannabis consumption demonstrate diminished developmental trajectories across multiple cognitive domains, including memory retention, attentional capacity, language skills, and information processing speed, according to recent research. While initial cognitive abilities typically progressed at standard rates, users’ improvements plateaued significantly while their non-using peers continued advancing in these critical areas.

The psychoactive compound THC emerged as the primary agent responsible for the observed cognitive impairments, with memory function showing the most pronounced decline among affected teens. The findings underscore the potential long-term consequences of early cannabis exposure on brain maturation during formative developmental stages.

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