Vitamin D and psychosis: mini meta-analysis

Area of Science:

• Neuroscience
• Nutritional Psychiatry
• Psychiatric Epidemiology

Background:

• Vitamin D deficiency is prevalent in individuals with psychotic disorders.
• Emerging evidence suggests potential pathophysiological roles for vitamin D in psychosis.

Purpose of the Study:

• To meta-analytically summarize evidence on vitamin D levels in psychotic disorders.
• To compare vitamin D levels between patients with psychosis, healthy controls, and other psychiatric illnesses.

Main Methods:

• Systematic review and meta-analysis of existing studies.
• Inclusion of seven studies reporting vitamin D levels in psychosis patients.

Main Results:

• All seven studies reported insufficient vitamin D levels in patients with psychosis.
• Schizophrenia showed a medium effect size for lower vitamin D compared to healthy controls.
• A trend for lower vitamin D levels was observed in schizophrenia compared to other psychoses, with non-significant differences compared to major depression.

Conclusions:

• Patients with psychotic disorders, including schizophrenia, exhibit insufficient vitamin D levels.
• Further research is needed to explore the potential psychotropic effects of vitamin D supplementation in psychosis.