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Cannabis use linked to psychosis later in life

BMJ 2007; 335 doi: (Published 02 August 2007) Cite this as: BMJ 2007;335:228

Young people should be warned that cannabis will probably increase their risk of a psychotic illness, conclude the authors of a comprehensive meta-analysis. Two linked comments agree (p 292, p 293), and one estimates that 800 cases of schizophrenia could be prevented each …

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