[A pilot study of vitamin D in psychogeriatric patients: 82% is (severely) deficient].

In a group of 34 psychogeriatric patients (mean age 79 years) the prevalence of hypovitaminosis D was found to be 82%, taking 30 nmol/l as cut-off for calcidiol. We found 47% of the whole group to be severely deficient having values lower than 20 nmol/l. Results of related test are presented and discussed. Patient were treated with oral calcium and vitamin D3 medication. Origin, presentation and risks of hypovitaminosis D, including muscle weakness and the aggravating role of low calcium intake, are discussed with special attention to psychogeriatric patients. Suppletion of vitamin D and calcium is suggested for this patient group.