Seasonal and geographical variations in lung cancer prognosis in Norway. Does Vitamin D from the sun play a role?

@article{Porojnicu2007SeasonalAG,
  title={Seasonal and geographical variations in lung cancer prognosis in Norway. Does Vitamin D from the sun play a role?},
  author={Alina Carmen Porojnicu and Trude Eid Robsahm and Arne Dahlback and Jens Berg and David C. Christiani and Oyvind Sverre Bruland and Johan Emilian Moan},
  journal={Lung cancer},
  year={2007},
  volume={55 3},
  pages={263-70}
}
Vitamin D derivatives can modulate proliferation and differentiation of cancer cells. Our main source of Vitamin D is ultraviolet (UV) radiation-induced synthesis in skin following sun exposure. UV measurements show that the ambient annual UV exposures increase by about 50% from north to south in Norway. As judged from the incidence rates of squamous cell carcinoma, the same is true for the average personal UV exposures. Solar ultraviolet B (UVB) (280-320nm) exhibits a strong seasonal variation… CONTINUE READING
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