Sunscreens suppress cutaneous vitamin D3 synthesis.

  title={Sunscreens suppress cutaneous vitamin D3 synthesis.},
  author={Lois Y Matsuoka and L F Ide and Jacobo Wortsman and J A Maclaughlin and Michael F Holick},
  journal={The Journal of clinical endocrinology and metabolism},
  volume={64 6},
Sunscreens block the cutaneous absorption of UV-B radiation and prevent sunburning, premature aging, and cancer of the skin. Inasmuch as UV-B radiation is also responsible for the photosynthesis of vitamin D3, we investigated the effect of sunscreens on the cutaneous formation of vitamin D3 in vivo and in vitro. Eight normal subjects, four of whom had been protected with the sunscreen para-aminobenzoic acid (sun protection factor 8), were exposed to one minimal erythema dose of UV radiation… CONTINUE READING
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