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nightsurfer on 2009-09-23Prospective study of predictors of vitamin D status and cancer incidence and mortality in men.
Giovannucci E, Liu Y, Rimm EB, Hollis BW, Fuchs CS, Stampfer MJ, Willett WC.
J Natl Cancer Inst. 2006 Apr 5;98(7):451-9.
Conclusions: Low levels of vitamin D may be associated with increased cancer incidence and mortality in men, particularly for digestive-system cancers. The vitamin D supplementation necessary to achieve a 25(OH)D increment of 25 nmol/L may be at least 1500 IU/day.