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Prenatal exposure to maternal stress and subsequent schizophrenia: The May 1940 invasion of the Netherlands

  • Jim Van Os (a1) and Jean-Paul Selten (a2)

Abstract

Background

It has been suggested that prenatal exposure to maternal stress increases the risk of subsequently developing schizophrenia.

Method

The five-day invasion and defeat of The Netherlands by the German army in May 1940 constituted a severe, well-circumscribed national stressful event. Individuals exposed and non-exposed to this stressor in the first, second and third trimester of pregnancy were followed up for lifetime schizophrenia outcome through the National Psychiatric Case Register.

Register

Cumulative incidence of schizophrenia was higher in the exposed cohort (risk ratio (RR): 1.15, 95% CI: 1.03–1.28), especially in those exposed in the first trimester (RR: 1.28, 95% CI: 1.07–1.53). Significant interaction with gender was apparent in second trimester exposed cohorts (RR men: 1.35, 95% CI: 1.05–1.74; RR women: 0.83, 95% CI: 0.61–1.12).

Conclusion

Maternal stress during pregnancy may contribute to the development of vulnerability to schizophrenia. The apparent longer window of exposure in male foetuses may be related to the slower pace of male early cerebral development.

Copyright

Corresponding author

Dr Jim van Os, Department of Psychiatry and Neuropsychology, European Graduate School of Neuroscience, Maastricht University, PO Box 616, 6200 MD Maastricht, The Netherlands. Tel: 31 43 329 9783. Fax: 31 43 329 9708

References

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Prenatal exposure to maternal stress and subsequent schizophrenia: The May 1940 invasion of the Netherlands

  • Jim Van Os (a1) and Jean-Paul Selten (a2)

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Prenatal exposure to maternal stress and subsequent schizophrenia: The May 1940 invasion of the Netherlands

  • Jim Van Os (a1) and Jean-Paul Selten (a2)
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