Top Ten Facts About Vit. D3 and Cancer From the Vitamin D Council!

Top ten facts about vitamin D and cancer (presented in the summaries):

  1. Many studies have found solar ultraviolet-B (UVB) and vitamin D associated with reduced risk of breast, colon, and rectal cancer.
  2. A randomized controlled trial with 1100 IU/day vitamin D3 plus 1450 mg/day calcium found a 77% reduction in all-cancer incidence.
  3. Geographical studies have found reduced risk in mortality rates for 20 types of cancer in regions of higher solar UVB doses.
  4. Observational studies have found that the risk of breast, colon, and rectal cancer fall as vitamin D blood levels rise at least up to 40 ng/mL (100 nmol/L).
  5. Mechanisms have been proposed to explain how vitamin D acts to reduce the risk of cancer from starting, growing, and spreading.
  6. Those who develop nonmelanoma skin cancer may have produced enough vitamin D to reduce their risk of internal cancers.
  7. Those with higher vitamin D blood levels at time of cancer diagnosis had nearly twice the survival rate of those with the lowest levels.
  8. African-Americans have an increased risk of cancer in part due to lower vitamin D blood levels because of darker skin.
  9. Higher UVB exposure early in life has been found associated with reduced risk of breast and prostate cancer.
  10. Those diagnosed with breast, colon and prostate cancer in summer in Norway had higher survival rates than those diagnosed in winter.

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