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Open Access Narrowband Ultraviolet B Exposures Maintain Vitamin D Levels During Winter: A Randomized Controlled Trial

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Exposure to solar ultraviolet B radiation during the summer months is the main source of vitamin D (VD) for people living in northern latitudes. The aim of this study was to determine whether artificial narrowband ultraviolet B (NB-UVB) whole-body exposures could maintain VD levels in winter. The intervention group received 2 standard erythema doses (SEDs) of NB-UVB exposures every second week from October 2013 to April 2014. In October 2013 serum 25-hydroxyvitamin D concentrations were 78.3 nmol/l in the intervention group (n = 16) and 76.8 nmol/l in the control group (n = 18). By April 2014 the concentrations had increased by 11.7 nmol/l (p = 0.029) in the intervention group and decreased by 11.1 nmol/l (p = 0.022) in the control group. The baseline VD concentration showed a negative correlation (p = 0.012) with body mass index (BMI). In conclusion, a suberythemal NB-UVB dose of 2 SED every second week maintains and even increases serum VD concentrations during the winter. A high BMI seems to predispose subjects to low levels of VD.

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Keywords: 25-HYDROXYVITAMIN D; BODY MASS INDEX; NARROW-BAND ULTRAVIOLET B; ULTRAVIOLET B

Document Type: Research Article

Publication date: May 1, 2016

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  • Acta Dermato-Venereologica is a bi-monthly international peer-reviewed journal for clinical and experimental research in the field of dermatology and venereology.

    It was founded in 1920 by Johan Almqvist and edited during 1936-1969 by Sven Hellerström. Since 1970, the journal has been published for the Society for the Publication of Acta Dermato-Venereologica on a non-profit basis.

    Acta Dermato-Venereologica publishes high-quality manuscripts in English dealing with new observations on basic dermatological and venereological research, as well as clinical investigations. Each volume also features a number of review articles in special areas, as well as short Letters to the Editor to stimulate debate and to disseminate important clinical observations. Acta Dermato-Venereologica has rapid publication times and is amply illustrated with a large number of colour photographs to enhance understanding.

    Acta Dermato-Venereologica covers inter alia:

    • ~ Atopic dermatitis and contact allergy
    • ~ Facial dermatoses and adnexal disorders
    • ~ New treatments
    • ~ Psoriasis and genodermatoses
    • ~ Psychodermatology
    • ~ Sexually transmitted diseases
    • ~ Skin biology and inflammation
    • ~ Skin cancer and pigmentation
    • ~ Skin immunology and lymphoma
    • ~ Urticaria and itch

    Extensive papers, proceedings from congresses and symposia are printed as supplements to the journal. Announcements concerning pertinent dermatological meetings and books received are also published.
    Readership: Doctors and scientists interested in dermatology, skin biology and venereology.

    Acta Dermato-Venereologica has an impact factor of 3.007.

    Issues between 1998 up to 2005 can be found at http://www.medicaljournals.se/acta/content

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