NP Medical News about Cancer Prevention; Vitamin D Supplementation

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Vitamin D Supplementation and Cancer Prevention
American Journal of Lifestyle Medicine, 09/17/09

Lenz TL – Several observational studies and a few prospectively randomized controlled trials have demonstrated that adequate levels of vitamin D can decrease the risk and improve survival rates for several types of cancers including breast, rectum, ovary, prostate, stomach, bladder, esophagus, kidney, lung, pancreas, uterus, non–Hodgkin lymphoma, and multiple myeloma. Individuals with serum vitamin D concentrations less than 20 ng/mL are considered most at risk, whereas those who achieve levels of 32 to 100 ng/mL are considered to have sufficient serum vitamin D concentrations. Vitamin D can be obtained from exposure to the sun, through dietary intake, and via supplementation. Obtaining a total of approximately 4000 IU/d of vitamin D3 from all sources has been shown to achieve serum concentrations considered to be in the sufficient range. Most individuals will require a dietary supplement of 2000 IU/d of vitamin D3 to achieve sufficient levels as up to 10 000 IU/d is considered safe. Vitamin D3 is available as an over–the–counter product at most pharmacies and is relatively inexpensive, especially when compared with the demonstrated benefits.

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