Social and Behavioral Sciences Commons^™

The Impact Of Cannabis Use On Cognitive Functioning In Patients With Schizophrenia: A Meta-Analysis Of Existing Findings And New Data In A First-Episode Sample, Murat Yücel, Emre Bora, Daniel I. Lubman, Nadia Solowij, Warrick J. Brewer, Sue M. Cotton, Phillipe Conus, Michael J. Takagi, Alex Fornito, Stephen J. Wood, Patrick D. Mcgorry, Christos Pantelis

Faculty of Health and Behavioural Sciences - Papers (Archive)

Cannabis use is highly prevalent among people with schizophrenia, and coupled with impaired cognition, is thought to heighten the risk of illness onset. However, while heavy cannabis use has been associated with cognitive deficits in long-term users, studies among patients with schizophrenia have been contradictory. This article consists of 2 studies. In Study I, a meta-analysis of 10 studies comprising 572 patients with established schizophrenia (with and without comorbid cannabis use) was conducted. Patients with a history of cannabis use were found to have superior neuropsychological functioning. This finding was largely driven by studies that included patients with a lifetime …