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Vitamin D and schizophrenia: 20 years on
Xiaoying Cui1,2, John J McGrath1,2,3, Thomas H J Burne1,2
1Queensland Brain Institute, University of Queensland, St. Lucia, QLD, 4072, Australia.
Molecular Psychiatry
|January 27, 2021
Summary
Vitamin D deficiency is linked to schizophrenia risk, particularly in early life. While the association is confirmed, caution is urged in interpreting causality due to confounding health factors.
Area of Science:
- Neuroscience
- Psychiatry
- Nutritional Epidemiology
Background:
- Epidemiological studies suggest a link between vitamin D deficiency and schizophrenia.
- Neonatal vitamin D deficiency is associated with increased schizophrenia risk.
- Vitamin D plays a crucial role in central nervous system development.
Purpose of the Study:
- To systematically review and meta-analyze the association between vitamin D deficiency and schizophrenia.
- To investigate the role of vitamin D in early life brain development and its relevance to schizophrenia.
- To summarize findings from vitamin D supplementation trials in schizophrenia patients.
Main Methods:
- Systematic review and meta-analysis of epidemiological studies.
- Review of animal models of developmental and adult vitamin D deficiency.
- Analysis of factors influencing vitamin D levels in schizophrenia patients.
Main Results:
- Confirmed association between vitamin D deficiency and schizophrenia, extending to first-episode psychosis.
- Animal models show altered brain development and neurobiological changes with developmental vitamin D deficiency.
- Confounding factors like poor health and diet in schizophrenia patients complicate causal interpretation.
Conclusions:
- The hypothesis that early-life vitamin D deficiency increases schizophrenia risk remains plausible.
- Further research is warranted to explore the causal relationship and potential therapeutic roles of vitamin D.
- Vitamin D supplementation trials in schizophrenia patients show inconsistent results.
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