Comparison of narrow-band ultraviolet B exposures and oral vitamin D substitution on serum 25-hydroxyvitamin D concentration

British Journal of Dermatology, 05/10/2012

The present study shows that 12 narrow–band ultraviolet B (NB–UVB) exposures given during 4 weeks increase serum 25(OH)D concentration significantly more than 20μg of oral cholecalciferol daily. A short, NB–UVB course is an effective way to improve vitamin D balance in winter and the response is evident still 2 months after the course.

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