Epidemic vitamin D deficiency among patients in an elderly care rehabilitation facility

Many benefits are ascribed to vitamin D beyond its well-known effects on calcium and bone metabolism. Vitamin D in adequate amounts is apparently beneficial to muscle, lessening the risk of falls and fractures in the elderly. The elderly produce less vitamin D in their skin than younger persons do, and they also spend less time in the sun; they are therefore at greater risk of vitamin D deficiency.

We used gas chromatography with mass spectrometry coupling to measure the 25-OH-vitamin D level of 1578 elderly persons (72% women) who were consecutively admitted to an elderly care rehabilitation facility in Trier, Germany, from July 2009 to March 2011. Their mean and median age was 82 years.

89% of the patients had 25-OH-vitamin D deficiency (defined as a level below 20 ng/mL), and 67% had a severe deficiency (below 10 ng/mL). Only 4% had levels in the target range (30-60 ng/mL); none had a level above 100 ng/mL.

Many of these patients were deficient in vitamin D. Persons of very advanced age need a better supply of vitamin D not only to keep their bones healthy, but also to lessen the risk of falls and fractures.