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Based on some recent studies, there is emerging evidence that Vitamin D may modestly reduce the risk for breast cancer. Two prospective and four case-control studies* support a protective effect in older women, however, a large randomized controlled trial did not show an association between Vitamin D levels and breast cancer risk. Researchers believe there may be variations in the way individuals metabolize and use vitamin D due to their age, genetic make-up, menopausal status and sunlight exposure. Many questions about this relationship still remain increasing the importance of additional studies. In the meantime, given the possibility that Vitamin D may play a role in breast cancer risk, it is advisable for all women to make an effort to consume an adequate amount of calcium by including Vitamin D rich foods such as fortified dairy products, fortified cereals and canned salmon. * Ann Epidemiol. Bertone-Johnson ER. 2009 Feb 18. Vitamin D and Breast Cancer.
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