New Study Questions Association Between Cannabis Use in Adolescence and Lower IQ, Educational Performance
Teenagers make up most of new cannabis users and also tend to consume it heavily. This is a matter of concern among health professionals and policy makers, mostly due to the possible harms the drug may have on brain development, cognitive faculties, and educational performance.
Research has more or less consistently shown that cannabis causes acute impairments in memory consolidation, working memory, attention, psychomotor control, impulse inhibition, and abstract reasoning. These effects may, in turn, explain why cannabis users often have a poorer educational performance and attainment compared to non-users.
However, the question of whether cannabis related cognitive impairments can become permanent is still hotly debated. The best way to address this question is through longitudinal studies that follow people before they start using drugs, in order to exclude the possibility that symptoms currently seen among users were not already present before the onset of drug consumption.
In a study...
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