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An evidence based review of acute and long-term effects of cannabis use on executive cognitive functions.

Rebecca D Crean, Natania A. Crane, Barbara J Mason

Journal of Addiction Medicine March 2011 DOI: 10.1097/adm.0b013e31820c23fa (opens in new tab)

Study at a glance

AI-extracted from the abstract
Characteristics Review Peer reviewed
Topics Cannabis
Keywords Cognition Executive functions Treatment
Key findings The authors conclude that cannabis use impairs executive functions, with deficits varying by quantity, recency, age of onset, and duration of use. They argue these impairments can interfere with learning recovery skills and increase relapse risk, and they discuss implications for treatment.

Abstract

Cannabis use has been shown to impair cognitive functions on a number of levels-from basic motor coordination to more complex executive function tasks, such as the ability to plan, organize, solve problems, make decisions, remember, and control emotions and behavior. These deficits differ in severity depending on the quantity, recency, age of onset and duration of marijuana use. Understanding how cannabis use impairs executive function is important. Individuals with cannabis-related impairment in executive functions have been found to have trouble learning and applying the skills required for successful recovery, putting them at increased risk for relapse to cannabis use. Here we review the research on the acute, residual, and long-term effects of cannabis use on executive functions, and discuss the implications for treatment.

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