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Correction of vitamin D deficiency in elderly long-stay patients by sunlight exposure


Journal of Nutritional Medicine 1(3): 201-207
Correction of vitamin D deficiency in elderly long-stay patients by sunlight exposure
The relationship between plasma 25-OHD and exposure to ultraviolet B (UVB) radiation in natural sunlight was measured in elderly long-stay patients from April to July 1984. Polysulphone film badges, calibrated in energy units, were worn by all subjects to measure accumulated UVB dose, and plasma 25-OHD was measured fortnightly by a competitive protein binding assay. A linear relationship between changes in plasma 25-OHD and UVB exposure was found. The result shows that exposure to sunlight for a few hours each week is sufficient to improve the vitamin D status of the elderly.


Accession: 002060739

DOI: 10.3109/13590849009003159



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