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October 25, 2010

Low vitamin D may raise cancer risk


U. ROCHESTER (US) — Two new vitamin D studies suggest intriguing ties between a deficiency of D and breast and colon cancer, particularly among African Americans.

The research adds to mounting evidence that some connection exists between vitamin D and cancer, although it is not yet known how vitamin D modifies or contributes to cancer risk. Evidence is also inconsistent as to whether vitamin D might be used for cancer prevention.

Many of the body's tissues and cells have vitamin D receptors, making it a potent regulator of cell activity and growth. Researchers report vitamin D might generally improve DNA repair, reduce inflammation, and promote the death of potentially malignant cells.