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Smoking and vulnerability for schizophrenia

J de Leon1

  • 1UK Mental Health Research Center, Eastern State Hospital, Lexington, KY 40508, USA.

Schizophrenia Bulletin
|January 1, 1996
PubMed
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This summary is machine-generated.

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Schizophrenia patients have exceptionally high smoking rates, often over 70%. This study suggests early smoking onset and familial factors, not just treatment, contribute to this high prevalence in individuals with schizophrenia.

Area of Science:

  • Psychiatry
  • Addiction Medicine
  • Genetics

Background:

  • The prevalence of smoking among individuals with schizophrenia is significantly higher than in the general population or other psychiatric groups.
  • Existing explanations, such as neuroleptic treatment and hospital environment, do not fully account for this disparity.

Purpose of the Study:

  • To investigate the factors contributing to the high rates of smoking in schizophrenia patients.
  • To explore the potential role of early smoking onset and familial factors in the development of smoking behaviors in this population.

Main Methods:

  • Analysis of state hospital survey data, controlling for confounding variables.
  • Examination of smoking prevalence in relation to schizophrenia onset and family history.

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Main Results:

  • Schizophrenia patients are more likely to be smokers than the general population or other psychiatric inpatients, even after adjusting for other factors.
  • High smoking rates may be linked to difficulties in quitting, late-onset smoking post-psychosis, and increased early-onset daily smoking before psychosis.
  • Increased early onset suggests familial factors may predispose individuals at risk for schizophrenia to smoking.

Conclusions:

  • The high prevalence of smoking in schizophrenia is likely multifactorial, involving genetic predispositions and early-onset behaviors.
  • Familial smoking patterns may serve as a marker for individuals at genetic risk for developing schizophrenia.