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Season of Birth in High and Low Genetic Risk Schizophrenics

Published online by Cambridge University Press:  29 January 2018

Eric Shur
Eric Shur*
Affiliation:
Maudsley and Bethlem Royal Hospitals, London, SE5
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Summary

Hypotheses which have been proposed to account for the unusual seasonal birth pattern observed in schizophrenic populations are discussed. These competing hypotheses were tested by retrospectively studying season of birth in 975 schizophrenics divided according to family history of psychiatric illness. Information was obtained from case notes, item sheets, and questionnaires sent to general practitioners. The results were inconclusive, but there was a trend for high genetic risk cases to be born less often in the first quarter of the year. Although no clear support could be provided for one or other season of birth hypothesis, it is tentatively suggested that a seasonal constitutional damage factor may be responsible for the excess of births described in schizophrenic populations in the early months of the year.

Type
Research Article
Information
The British Journal of Psychiatry , Volume 140 , Issue 4 , April 1982 , pp. 410 - 415
Copyright
Copyright © Royal College of Psychiatrists, 1982 

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