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Whether ionizing radiation is a risk factor for schizophrenia spectrum disorders?
Konstantin N Loganovsky1, Sergij V Volovik, Kenneth G Manton
1Research Center for Radiation Medicine, Academy of Medical Sciences of Ukraine, Ukraine. logan@rcrm.kiev.ua
Summary
Ionizing radiation exposure may increase the risk of schizophrenia spectrum disorders in genetically predisposed individuals. Studies suggest radiation-induced brain damage could trigger these conditions, supporting its role as a risk factor.
Area of Science:
- Neuroscience
- Psychiatry
- Environmental Health
Background:
- The neural diathesis-stressor hypothesis suggests genetic predisposition and environmental factors interact in schizophrenia development.
- Ionizing radiation is an environmental stressor with potential neurobiological effects.
Purpose of the Study:
- To evaluate ionizing radiation as a potential risk factor for schizophrenia spectrum disorders.
- To explore the link between radiation exposure and neurodegenerative changes relevant to schizophrenia.
Main Methods:
- Systematic review of electronic databases (MEDLINE, PsycINFO, EMBASE, etc.) and manual searches.
- Analysis of existing reports on radiation exposure and psychiatric disorders.
- Review of experimental radioneurobiological studies.
Main Results:
- Comparable reports indicate increased schizophrenia spectrum disorders after various ionizing radiation exposures (atomic bombings, Chernobyl, radiotherapy, high natural background radiation).
- Experimental studies support schizophrenia as a neurodegenerative disease, with radiation causing brain damage affecting the limbic system.
- Radiation exposure can impair molecular processes, potentially triggering schizophrenia in predisposed individuals or causing schizophrenia-like disorders.
Conclusions:
- Ionizing radiation is proposed as a significant risk factor for schizophrenia spectrum disorders.
- The hypothesis can be further tested using data from Chernobyl accident survivors.
- Research in this area is crucial for clinical medicine and neuroscience.