[Folic acid deficiency in chronically hospitalized mental patients]

Studies over the past 30 years have shown a relationship between folic acid deficiency and psychopathology. FA deficiency was observed more often in depressed and in psychotic patients, in alcoholics, in those suffering from organic mental disorders and in the psycho-geriatric population. In a chronic inpatient population of 120 patients, of the 106 in whom FA serum levels were examined, only 1 had a definitely subnormal level. An additional 16 had close to the lower limit of normal (2 ng/ml) and were considered borderline cases. FA-deficient and borderline patients were then compared to matched patients with normal FA levels on the MMSE and PANSS scales by blinded raters. Small differences were found between the 2 groups. The FA-deficient and borderline patients had more organic and psychotic symptoms, but the differences were not statistically significant.