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  • Writer's pictureDr. Dan Jin

Schizophrenia Patients Using Cannabis Showed Less Impaired Cognitive Functioning Compared to Non-Use

Even though cognitive deficit is often linked with cannabis abuse in a healthy population, a recent study showed the opposite in first-episode schizophrenia (FES) patients. Thirty FES patients who had been lifetime cannabis users showed less impaired cognitive functioning with the most prominent difference in visual memory compared to fifty-five FES non-users. A comparison of the healthy controls who used cannabis, and those who did not, revealed no sizeable differences in cognitive performance between the groups.



  1. Hájková, M. et al. Cognitive performance and lifetime cannabis use in patients with first-episode schizophrenia spectrum disorder. Cogn Neuropsychiatry 26, 257–272 (2021).

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