Vitamin D Levels and Related Genetic Polymorphisms, Sun Exposure, Skin Color, and Risk of Aggressive Prostate Cancer
Annual summary rept. 1 Jul 2010-30 Jun 2011
NORTHWESTERN UNIV EVANSTON IL
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We have been collecting more participants from the participating sites with funding from Dr. Kittles laboratory. Preliminary findings showed that the rates of vitamin D deficiency with prospective specimen collection are 76 of all men. Rates of vitamin D deficiency were approximately 45 of European American men in Chicago and 86-95 of African American men depending on which deficiency cutoff definition used. The most predictive factor for being vitamin D deficient was season of the blood draw. Additionally, dietary intake of vitamin D was less than 200IU per day and the majority was not taking vitamin D supplementation. The mean vitamin D levels are lowest in African American men followed by Hispanic men, whom were also more deficient than European American men.
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