The association between vitamin D and symptom domains in psychotic disorders: A systematic review

Vitamin D deficiency is prevalent among people with psychosis and may play a role in the aetiology of psychotic disorders. However, its impact on clinical symptom severity has not been independently reviewed. We conducted a systematic search of randomized trials and observational studies that assessed the relationship between vitamin D and symptom domains (positive and negative psychotic symptoms, total and general psychopathology, cognitive and...