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Vitamin D May Prevent Breast Cancer

There are two new reports by cancer prevention specialists at Moores Cancer Center, Univsrsity of California, suggest that vitamin D in new prescriptions may prevent up to one half of all cases of breast cancer. The study is published online in the current issue of The Journal of Steroid Biochemistry and Molecular Biology. It pooled data from two earlier studies by the Harvard Nurses Health Study and the St. George’s Hospital Study that alleged that people with the highest levels of 25-hydroxyvitamin D, 25(OH)D, had the lowest incidences of breast cancer.

The research was based on 1,760 cases of individuals in the two studies and divided them into five equal groups, from the lowest 25(OH)D at less than 13 nanograms per milliliter, to the highest group with 52 nanograms per milliliter. “”The data were very clear, showing that individuals in the group with the lowest blood levels had the highest rates of breast cancer, and the breast cancer rates dropped as the blood levels of 25-hydroxyvitamin D increased,”” said study co-author Cedric Garland, Dr.P.H. “”The serum level associated with a 50 percent reduction in risk could be maintained by taking 2,000 international units of vitamin D3 daily plus, when the weather permits, spending 10 to 15 minutes a day in the sun.””

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