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Rigshospitalet - a part of Copenhagen University Hospital
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Vitamin D levels and Cancer Incidence in 217.244 individuals from Primary Health Care in Denmark

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  • Fie Juhl Vojdeman
  • Christian Medom Madsen
  • Kirsten Frederiksen
  • Darshana Durup
  • Anja Olsen
  • Louise Hansen
  • Anne-Marie Heegaard
  • Bent Lind
  • Anne Tjønneland
  • Henrik Løvendahl Jørgensen
  • Peter Schwarz
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Vitamin D has been linked to cancer development in both pre-clinical and epidemiological studies. Our study examines the association between serum levels of vitamin D and cancer incidence in the Capital Region of Denmark. Individuals who had vitamin D analyzed at The Copenhagen General Practitioners Laboratory between April 2004 and January 2010 were linked to Danish registries with end of follow-up date at Dec 31st 2014, excluding individuals with pre-existing cancer. Cox regression models adjusted for age in one-year intervals, sex, month of sampling, and Charlson Comorbidity Index were applied. The study population of 217,244 individuals had a median vitamin D level of 46 nmol/L (IQR 27–67 nmol/L). Non-melanoma skin cancer was the most frequent form of cancer, followed by breast-, lung-, and prostate cancers. No associations were found between increments of 10 nmol/L vitamin D and incidence of breast, colorectal, urinary, ovary or corpus uteri cancer. However, higher levels of vitamin D were associated with higher incidence of non-melanoma (HR 1.09 [1.09–1.1]) and melanoma skin cancer (HR 1.1 [1.08–1.13]) as well as prostate (HR 1.05 [1.03–1.07]) and hematological cancers (HR 1.03 [1.01–1.06]), but with lower incidence of lung cancer (HR 0.95 [0.93–0.97]). In our study, vitamin D levels are not associated with the incidence of several major cancer types, but higher levels are significantly associated with a higher incidence of skin, prostate, and hematological cancers as well as a lower incidence of lung cancer. These results do not support an overall protective effect against cancer by vitamin D.

Original languageEnglish
JournalInternational Journal of Cancer
Volume145
Issue number2
Pages (from-to)338-346
ISSN0020-7136
DOIs
Publication statusPublished - 15 Jul 2019

Bibliographical note

© 2019 UICC.

    Research areas

  • cancer incidence, primary health care, vitamin D levels

ID: 56118237