Study finds no long-term negative cognitive effects from marijuana

THE RAW STORY:   While cognitive performance is negatively affected by cannabis use, the negative effects appear to completely wear off within a month, according to research published in the Experimental and Clinical Psychopharmacology in late June.

³With the number of cannabis users both illicitly and licitly increasing, the question of any potential lasting impact from cannabis use is
increasingly important,² Amy M. Schreiner and Michael E. Dunn of the University of Central Florida wrote in their study.

Numerous studies have found that cannabis use affects memory, attention, perceptual-motor tasks, and other cognitive processes, but studies on how long these effects last has been inconsistent. The studies were complicated by the fact that psychoactive compounds in marijuana can linger in the body for days…  (more)

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