Daily skunk cannabis use associated with a 5-fold increase in psychosis risk

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Luke Sheridan-Reins explores a recent paper on the contribution of cannabis use to variation in the incidence of psychotic disorder across Europe.

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What can genetics tell us about the link between cannabis and schizophrenia? #MHQT

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Suzi Gage summarises a recent GWAS of lifetime cannabis use, which reveals new risk loci, genetic overlap with psychiatric traits, and a causal influence of schizophrenia. Interesting new evidence ahead of our Mental Health Question Time #MHQT event in London tomorrow.

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Is Cannabidiol (CBD) an effective antipsychotic?

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Luke Sheridan Rains publishes his debut blog on a recent multicentre RCT of Cannabidiol (CBD) as an adjunctive therapy for people with schizophrenia, which suggests that CBD had a beneficial, but modest impact on positive psychotic symptoms and severity of illness when used alongside existing antipsychotics.

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Joint risks? Tobacco and cannabis and psychotic symptoms

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James MacCabe appraises a recent study, which looks at the association of combined patterns of tobacco and cannabis use in adolescents who go on to experience psychotic symptoms.

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Adolescent cannabis use increases risk of an adult psychotic diagnosis

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Thomas Richardson looks at a recent prospective cohort study in the British Journal of Psychiatry on adolescent cannabis use, baseline prodromal symptoms and the risk of psychosis.

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What do we know about women, cannabis and psychosis?

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Ian Hamilton and Suzi Gage explain why we know so little about the relationship between cannabis and severe mental illness in women.

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Risk factors and peripheral biomarkers for schizophrenia spectrum disorders

This 'umbrella review' aimed to systematically appraise the meta-analyses of observational studies on risk factors and peripheral biomarkers for schizophrenia spectrum disorders.

Marcus Munafo considers the findings of a systematic review of meta-analyses of observational studies, which looks at risk factors and peripheral biomarkers for psychotic disorders on the schizophrenia spectrum.

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Cannabis use can lead to relapse in psychosis, partially because patients stop taking medication

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Thomas Richardson writes his debut blog about a recent prospective analysis of poor medication adherence and risk of relapse associated with continued cannabis use in patients with first-episode psychosis.

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Cannabis and psychosis: it’s high time for a review

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Joe Barnby considers the findings of a recent meta-analysis of cannabis use and symptoms severity in individuals at ultra-high risk for psychosis.

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Sex matters: why have females been excluded from addiction research?

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Ian Hamilton explores two recent articles that consider the shocking sex and gender inequities in addiction research.

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