Narrowband ultraviolet B three times per week is more effective in treating vitamin D deficiency than 1600 IU oral vitamin D-3 per day: a randomized clinical trial
Author
Summary, in English
Background It is known that narrowband ultraviolet B (NB-UVB) radiation and oral vitamin D-3 supplementation can both improve serum levels of vitamin D, expressed as 25-hydroxyvitamin D-3 [25(OH)D-3]. However, surprisingly few studies have compared the effects of the two interventions in treating vitamin D deficiency. Objectives To compare the effect of NB-UVB exposure with oral vitamin D-3 supplementation on vitamin D levels in patients with vitamin D deficiency. Methods Seventy-three participants with vitamin D deficiency [25(OH)D-3 <= 25 nmol L-1] were consecutively enrolled from February 2010 to May 2011, avoiding the summer period (June to September). The participants were randomized into two groups, one receiving full body NB-UVB exposure three times per week, the other receiving 1600 IU (40 mu g) oral vitamin D-3 per day together with 1000 mg calcium. Thirty-two participants completed the 6-week study period, 16 in each group. In both groups blood samples were obtained at baseline and after 3 and 6 weeks. Results We found a significantly greater increase in 25(OH)D-3 levels (mean) in the NB-UVB treated group (from 19.2 to 75 nmol L-1) compared with the oral vitamin D-3 treated group (from 23.3 to 60.6 nmol L-1) after 6 weeks of treatment (P = 0.02), accompanied by a significant decrease in parathyroid hormone for the whole group (from 5.3 to 4.2 pmol L-1, P = 0.028). Conclusions Full body NB-UVB three times per week is more effective in treating vitamin D deficiency than prescription of a daily oral intake of 1600 IU (40 mu g) vitamin D-3.
Department/s
Publishing year
2012
Language
English
Pages
625-630
Publication/Series
British Journal of Dermatology
Volume
167
Issue
3
Links
Document type
Journal article
Publisher
Wiley-Blackwell
Topic
- Dermatology and Venereal Diseases
Status
Published
Research group
- Dermatology
- Genomics, Diabetes and Endocrinology
ISBN/ISSN/Other
- ISSN: 1365-2133