Comparison of vitamin B12, vitamin D and folic acid blood levels in patients with schizophrenia, drug addiction and controls

Schizophrenia (SCH) and drug addiction are chronic disorders that are frequently accompanied by physical diseases, poor nutrition and reduced self-care, all of which are likely to result in vitamin deficiencies. The objective of this study was to compare vitamin levels in SCH patients, substance use disorder (SUD) patients and healthy controls (HCs). The study included 189 SCH patients, 119 SUD patients and 109 HCs. Information on vitamin B12,...