Tags

Type your tag names separated by a space and hit enter

The solar UV radiation level needed for cutaneous production of vitamin D3 in the face. A study conducted among subjects living at a high latitude (68 degrees N).
Photochem Photobiol Sci. 2007 Jan; 6(1):57-62.PP

Abstract

Populations at high latitudes experience several winter months with insufficient UV solar radiation to induce a significant cutaneous production of vitamin D. This unique study was designed to pursue an in vivo threshold of UV radiation needed for cutaneous production of vitamin D to take place if only the face was exposed to UV radiation. The vitamin D status were measured by analyzing blood samples weekly from a study group of 15 subjects over a period of 2 months during late winter, when UV radiation can be expected to increase substantially from rising solar elevations. Statistical analysis showed no significant positive association between the mean UV radiation dose and the mean 25(OH)D (25-hydroxy vitamin D) for the group. On an individual basis, however, we found indications that subjects with very low initial concentration of 25(OH)D (<30 nmol l(-1)) seemed to respond to UV radiation as early as in the beginning of March. For other individuals diet seemed to be the dominant controlling factor for 25(OH)D levels.

Authors+Show Affiliations

Institute for Community Medicine, University of Tromsø, Tromsø, Norway. kare.edvardsen@nilu.noNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

17200737

Citation

Edvardsen, Kåre, et al. "The Solar UV Radiation Level Needed for Cutaneous Production of Vitamin D3 in the Face. a Study Conducted Among Subjects Living at a High Latitude (68 Degrees N)." Photochemical & Photobiological Sciences : Official Journal of the European Photochemistry Association and the European Society for Photobiology, vol. 6, no. 1, 2007, pp. 57-62.
Edvardsen K, Brustad M, Engelsen O, et al. The solar UV radiation level needed for cutaneous production of vitamin D3 in the face. A study conducted among subjects living at a high latitude (68 degrees N). Photochem Photobiol Sci. 2007;6(1):57-62.
Edvardsen, K., Brustad, M., Engelsen, O., & Aksnes, L. (2007). The solar UV radiation level needed for cutaneous production of vitamin D3 in the face. A study conducted among subjects living at a high latitude (68 degrees N). Photochemical & Photobiological Sciences : Official Journal of the European Photochemistry Association and the European Society for Photobiology, 6(1), 57-62.
Edvardsen K, et al. The Solar UV Radiation Level Needed for Cutaneous Production of Vitamin D3 in the Face. a Study Conducted Among Subjects Living at a High Latitude (68 Degrees N). Photochem Photobiol Sci. 2007;6(1):57-62. PubMed PMID: 17200737.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - The solar UV radiation level needed for cutaneous production of vitamin D3 in the face. A study conducted among subjects living at a high latitude (68 degrees N). AU - Edvardsen,Kåre, AU - Brustad,Magritt, AU - Engelsen,Ola, AU - Aksnes,Lage, Y1 - 2006/11/10/ PY - 2007/1/4/pubmed PY - 2007/7/12/medline PY - 2007/1/4/entrez SP - 57 EP - 62 JF - Photochemical & photobiological sciences : Official journal of the European Photochemistry Association and the European Society for Photobiology JO - Photochem Photobiol Sci VL - 6 IS - 1 N2 - Populations at high latitudes experience several winter months with insufficient UV solar radiation to induce a significant cutaneous production of vitamin D. This unique study was designed to pursue an in vivo threshold of UV radiation needed for cutaneous production of vitamin D to take place if only the face was exposed to UV radiation. The vitamin D status were measured by analyzing blood samples weekly from a study group of 15 subjects over a period of 2 months during late winter, when UV radiation can be expected to increase substantially from rising solar elevations. Statistical analysis showed no significant positive association between the mean UV radiation dose and the mean 25(OH)D (25-hydroxy vitamin D) for the group. On an individual basis, however, we found indications that subjects with very low initial concentration of 25(OH)D (<30 nmol l(-1)) seemed to respond to UV radiation as early as in the beginning of March. For other individuals diet seemed to be the dominant controlling factor for 25(OH)D levels. SN - 1474-905X UR - https://www.unboundmedicine.com/medline/citation/17200737/The_solar_UV_radiation_level_needed_for_cutaneous_production_of_vitamin_D3_in_the_face__A_study_conducted_among_subjects_living_at_a_high_latitude__68_degrees_N__ L2 - https://doi.org/10.1039/b613263d DB - PRIME DP - Unbound Medicine ER -