Low Vitamin D May Mean Worse Breast Cancer

Vitamin D deficiencies have long been associated with disease, but new research suggests that low levels of vitamin D in women with breast cancer can lead to more aggressive forms of the disease, and even death. Researchers at the University of Toronto studied the correlation between vitamin D levels in the blood, the rate of breast cancer metastases -- the incidence of having the cancer spread -- and the overall survival rates of 512 women who were diagnosed with breast cancer between 1989...Full Story
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