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Developmental Predictors of Suicidality in Schizophrenia: A Systematic Review
Lindsay L Benster1,2, Noah Stapper1,2, Katie Rodriguez1
1Department of Psychiatry, UC San Diego, La Jolla, CA 92093, USA.
Brain Sciences
|October 25, 2024
Summary
Childhood trauma and genetic factors significantly predict suicidal ideation and attempts in schizophrenia (SZ). Addressing these biopsychosocial risks is key to prevention and improved clinical management for this vulnerable group.
Area of Science:
- Psychiatry
- Neuroscience
- Genetics
Background:
- Schizophrenia (SZ) is a severe psychiatric disorder with complex genetic, developmental, and environmental influences.
- Suicidal ideation (SI) and suicide attempts (SAs) are significant risks for individuals with SZ.
Purpose of the Study:
- To systematically review developmental predictors of SI in SZ.
- To delineate the multifactorial etiology of suicide in schizophrenia.
Main Methods:
- Comprehensive literature search of Medline, PsycINFO, and EMBASE databases.
- Inclusion of 23 eligible studies with diverse methodologies and global research efforts.
Main Results:
- Early life adversities (childhood trauma) robustly associated with increased SI/SAs in SZ.
- Genetic factors (inflammation-related gene polymorphisms, neurodevelopmental abnormalities) and family psychiatric history contribute to suicidality risk.
- Environmental factors (socioeconomic status, social support) also play a role in SZ outcomes.
Conclusions:
- Biopsychosocial models are essential for understanding SI in SZ.
- Interventions should target the interplay of genetic, developmental, and environmental risk factors.
- Longitudinal studies are needed to understand dynamic risk factor interactions for targeted prevention.
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