Vitamin D and psychosis: Mini meta-analysis

Schizophrenia Research, 08/01/2013

Murri MB et al. – Individuals with psychotic disorders are more likely to have vitamin D (VD) deficiency, while evidence suggests VD could have pathophysiological roles. The authors summarized meta–analytically the available evidence on VD levels in psychotic disorders in comparison with healthy controls and other psychiatric illnesses. No study has investigated the potential psychotropic effects of VD supplementation in patients with psychosis.


  • The authors found seven studies, all reporting insufficient VD levels in patients with psychosis.


  • Schizophrenia had a medium effect size for lower VD than healthy controls, and a trend for lower levels than other psychoses.
  • There were non-significant differences between schizophrenia and major depression.

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