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Evolutionary perspectives on schizophrenia.

Joseph Polimeni1, Jeffrey P Reiss

  • 1Department of Psychiatry, University of Manitoba, Winnipeg, MB R3E 3N4. jpolime@cc.umanitoba.ca

Canadian Journal of Psychiatry. Revue Canadienne De Psychiatrie
|March 15, 2003
PubMed
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Evolutionary theory offers insights into psychiatric disorders like schizophrenia, an ancient condition with genetic roots. This review explores historical and current evolutionary explanations for schizophrenia's origins.

Area of Science:

  • Evolutionary biology
  • Psychiatric genetics
  • Neuroscience

Background:

  • The theory of evolution, focusing on genetic changes over time, can influence phenotypes with genetic underpinnings.
  • Schizophrenia is recognized as an ancient disorder with a significant genetic basis.
  • Evolutionary principles have been applied to schizophrenia research since the 1960s.

Purpose of the Study:

  • To review major historical and current evolutionary explanations for the origins of schizophrenia.
  • To explore how evolutionary forces may have shaped schizophrenia as a condition.

Main Methods:

  • Literature review of evolutionary explanations for schizophrenia.
  • Analysis of historical and contemporary research applying evolutionary theory to psychiatric disorders.

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Main Results:

  • Schizophrenia is conceptualized within evolutionary frameworks either as an advantageous trait or a byproduct of brain evolution.
  • Multiple evolutionary hypotheses attempt to explain the persistence of schizophrenia.

Conclusions:

  • Evolutionary perspectives provide a framework for understanding the potential origins and persistence of schizophrenia.
  • Further research integrating evolutionary biology and psychiatry is warranted to elucidate the complex etiology of schizophrenia.