Clothing prevents ultraviolet-B radiation-dependent photosynthesis of vitamin D3.

Since UV-B mediates the cutaneous formation of vitamin D3, we examined the attenuation of that photosynthetic reaction by the commonly used fabrics cotton, wool, and polyester in black and white colors

L Y Matsuoka; J Wortsman; M J Dannenberg; B W Hollis; Z Lu; M F Holick

2014

Scholarcy highlights

  • Photoprotection of the skin is mainly a function of clothing, the effectiveness of the latter against UV-B solar radiation has not been measured in vivo
  • Since UV-B mediates the cutaneous formation of vitamin D3, we examined the attenuation of that photosynthetic reaction by the commonly used fabrics cotton, wool, and polyester in black and white colors
  • Direct transmission of UV-B was attenuated the most by black wool and the least by white cotton
  • None of the fabrics allowed the photoproduction of previtamin D3 from 7-dehydrocholesterol irradiated in vitro with up to 40 min of simulated sunlight or the elevation of serum vitamin D3 after irradiation with approximately one minimal erythema dose of UV-B in volunteers wearing jogging garments made of these fabrics
  • We conclude that clothing prevents or significantly impairs the formation of vitamin D3 after photostimulation with up to six MEDs of UV-B

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