Inhaling evidence about tobacco and psychosis

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Ian Hamilton explores a recent Finnish study of adolescent tobacco smoking and the risk of psychosis, which found that young people aged 15-16 who smoked more than 10 cigarettes a day were three times more likely to have psychosis by the time they reached age 30.

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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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Potentially malignant disorders of the oral cavity: Evaluation guideline

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This new clinical practice guideline from the American Dental Association (ADA) updates the 2010 guideline on “Evidence-based Clinical Recommendations Regarding Screening for Oral Squamous Cell Carcinomas

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Sleep bruxism: risk factors

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This review of risk factors for sleep bruxism identified 9 studies involving a total of 12,454 patients. Strong associations were found for sleep bruxism, GERD and a gene related to serotonergic neurotransmission.

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Smoke-free policy in psychiatric hospitals associated with reduction in physical violence

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Olivia Maynard reports on a new study in The Lancet Psychiatry that explores the effect of implementing a smoke-free policy on physical violence in a psychiatric inpatient setting, which has some surprising findings.

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Tobacco smoking, cognition and first episode psychosis: time for a rethink?

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Marcus Munafo appraises a recent cross sectional study of tobacco smoking and its association with cognition in first episode psychosis patients.

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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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Nicotine reverses hypofrontality in animal models of addiction and schizophrenia

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Marcus Munafo looks at a complex and sophisticated series of experiments that provide further insight into the relationships between genetic risk, cigarette smoking and schizophrenia.

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NICE one? Is NHS guidance on substance misuse fit for purpose?

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Ian Hamilton explains why the National Institute for Health and Care Excellence have missed a trick by not updating their 2007 guidance on psychosocial interventions for substance misuse.

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Marijuana use and head and neck cancer risk #CannabisMatters

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9 case-controlled studies were included in this review of the effect of marijuana use on head and neck cancer. The findings suggest no association marijuana use and head and neck cancer but other reviews suggest that this may differ by tumour site

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