Does tobacco use cause psychosis? Systematic review and meta-analysis.

ABSTRACT:

Background

Although the association between psychotic illness and cigarette smoking is well known, the reasons are unclear why people with psychosis are more likely to smoke than are the general population. We aimed to test several hypotheses. First, that daily tobacco use is associated with an increased risk of psychotic illness in both case-control and prospective studies. Second, that smoking is associated with an earlier age at onset of psychotic illness. Finally, that an earlier age at initiation of smoking is associated with an increased risk of psychosis. We also aimed to derive an estimate of the prevalence of smoking in patients presenting with their first episode of psychosis.

Methods

We searched Embase, Medline, and PsycINFO and selected observational studies in w

SUBMITTER: Gurillo P 

PROVIDER: S-EPMC4698800 | biostudies-literature | 2015 Aug

REPOSITORIES: biostudies-literature