Smoking cigarettes may increase risk of schizophrenia, study shows

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Smoking may increase the risk of developing schizophrenia, an analysis by a team from King’s College, London has found.

An association between cigarettes and psychotic symptoms has been reported before, but it has been generally assumed that this arises because people with the symptoms take up smoking as a way to relieve distress, counteract the symptoms, or manage the side effects of drugs used to treat them.