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Low maternal vitamin D as a risk factor for schizophrenia: a pilot study using banked sera
John McGrath1, Darryl Eyles, Bryan Mowry
1Department of Psychiatry, Queensland Centre for Schizophrenia Research, University of Queensland, The Park Centre for Mental Health, Wacol Q4076, Australia. john_mcgrath@qcsr.uq.edu.au
Schizophrenia Research
|August 2, 2003
Summary
Low maternal vitamin D levels were not a significant risk factor for schizophrenia in the general population. However, a trend suggested a potential link in the Black subgroup, possibly below a critical threshold.
Area of Science:
- Neuroscience
- Epidemiology
- Nutritional Science
Background:
- Epidemiological studies suggest a correlation between low maternal vitamin D and an increased risk of schizophrenia.
- Understanding prenatal environmental factors is crucial for schizophrenia etiology.
Purpose of the Study:
- To investigate the association between third-trimester maternal 25-hydroxyvitamin D3 levels and schizophrenia risk.
- To determine if maternal vitamin D deficiency is a risk factor for schizophrenia.
Main Methods:
- Maternal serum 25-hydroxyvitamin D3 levels were measured during the third trimester.
- Cases (individuals with schizophrenia/schizoaffective disorder) were compared to matched controls.
Main Results:
- No significant difference in maternal vitamin D levels was found between cases and controls overall.
- A trend towards lower vitamin D levels was observed in mothers of Black individuals with schizophrenia.
Conclusions:
- Maternal vitamin D does not appear to be a continuous risk factor for schizophrenia.
- Low maternal vitamin D below a critical threshold may be associated with increased schizophrenia risk, particularly in the Black subgroup.