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P-1427 - Season of Birth in Relation to Risk of Completed Suicide

Published online by Cambridge University Press:  15 April 2020

A. Paraschakis
Affiliation:
Department of Psychiatry, Dafni-Attica Psychiatric Hospital Department of Psychiatry, Athens University Medical School, Atticon General Hospital Athens Department of Forensic Medicin, Athens, Greece
D. Konstantinidou
Affiliation:
Department of Psychiatry, Dafni-Attica Psychiatric Hospital Department of Psychiatry, Athens University Medical School, Atticon General Hospital Athens Department of Forensic Medicin, Athens, Greece
I. Michopoulos
Affiliation:
Department of Psychiatry, Dafni-Attica Psychiatric Hospital Department of Psychiatry, Athens University Medical School, Atticon General Hospital Athens Department of Forensic Medicin, Athens, Greece
A. Douzenis
Affiliation:
Department of Psychiatry, Dafni-Attica Psychiatric Hospital Department of Psychiatry, Athens University Medical School, Atticon General Hospital Athens Department of Forensic Medicin, Athens, Greece
C. Christodoulou
Affiliation:
Department of Psychiatry, Dafni-Attica Psychiatric Hospital Department of Psychiatry, Athens University Medical School, Atticon General Hospital Athens Department of Forensic Medicin, Athens, Greece
F. Koutsaftis
Affiliation:
Department of Psychiatry, Dafni-Attica Psychiatric Hospital Department of Psychiatry, Athens University Medical School, Atticon General Hospital Athens Department of Forensic Medicin, Athens, Greece
L. Lykouras
Affiliation:
Department of Psychiatry, Dafni-Attica Psychiatric Hospital Department of Psychiatry, Athens University Medical School, Atticon General Hospital Athens Department of Forensic Medicin, Athens, Greece

Abstract

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Introduction:

Several studies show that the season of birth of suicide victims does not follow a random distribution.

Aim and method:

To examine season of birth, of a sample of suicide victims from Greece. We collected data from the Athens Department of Forensic Medicine, the largest in Greece, referring to the suicide victims of a 2-year period (November 2007-October 2009).

Results:

Date of birth was available for 296 out of a total of 335 suicide victims; 30% were born in winter, 30.5% in spring, 19.3% in summer & 20.3% in autumn. Relatively more were born in January (15.2%) & May (12.2%), fewer in June (4.1%) & November (5.1%). Our findings are in accordance with most of the relevant literature: It has been also shown that a seasonal distribution is associated with the high sensitivity of the CNS to environmental exposure in utero, infections, hormonal changes, maternal diet, photoperiod, temperature & weather conditions. Winter-borns more frequently present modifications in the behavioral expression of dopaminergic genetic polymorphisms that could predispose to impulsive & risky, as well as sensation seeking behaviors, later in life. Furthermore, low serotonin turnover at birth has been observed in those born between February & April; it is well-known that similar findings have been documented in adult suicidal behavior too.

Conclusion:

Risk of completed suicide seems to be higher for those born during winter & spring. More research is needed in order to clarify if season-month of birth should be included in the future assessment of suicide risk.

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Abstract
Copyright
Copyright © European Psychiatric Association 2012
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