When Adolescents Give Up Pot, Their Cognition Quickly Improves

Source: NPR

By RACHEL D. COHEN

Marijuana, it seems, is not a performance-enhancing drug. That is, at least, not among young people, and not when the activity is learning.

A study published Tuesday in the Journal of Clinical Psychiatry finds that when adolescents stop using marijuana — even for just one week — their verbal learning and memory improve. The study contributes to growing evidence that marijuana use in adolescents is associated with reduced neurocognitive functioning.

More than 14 percent of students in middle school and high school reported using marijuana within the past month, finds a National Institutes of Health survey conducted in 2017. And marijuana use has increased among high-schoolers over the past 10 years, according to the U.S. Department of Health & Human Services.

At the same time, the percentage of teens who believe that regular marijuana use poses a great risk to their health has dropped sharply since the mid-2000s. And legalization of marijuana may play a part in shaping how young people think about the drug. One study noted that after 2012, when marijuana was legalized in Washington state, the number of eighth-graders there that believed marijuana posed risks to their health dropped by 14 percent.

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