A nested case control study of plasma 25-hydroxyvitamin D concentrations and risk of colorectal cancer.


BACKGROUND Low vitamin D status has long been implicated in colorectal carcinogenesis. We investigated this relationship in a nested case-control study within the Health Professionals Follow-up Study (HPFS), a large ongoing study of male health professionals living in the United States. METHODS Between 1993 and 2002, 179 colorectal cancer patients were… (More)


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