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. 2011 Mar 1;128(5):1169-78.
doi: 10.1002/ijc.25425.

Antioxidant intake and risk of endometrial cancer: results from the Nurses' Health Study

Xiaohui Cui  1 , Bernard Rosner, Walter C Willett, Susan E Hankinson
Affiliations

Antioxidant intake and risk of endometrial cancer: results from the Nurses' Health Study

Xiaohui Cui et al. Int J Cancer. .

Abstract

To investigate the associations between antioxidant intake and risk of endometrial cancer, the authors analyzed data from the prospective Nurses' Health Study. From 1980 to 2006, 669 invasive adenocarcinoma cases were identified over 1.3 million person-years of follow-up. Information on dietary intake was collected in 1980 and updated every 2-4 years. Cox proportional hazard models were used to calculate the multivariate relative risks (RR), controlling for total energy and potential risk factors for endometrial cancer. Overall, the authors found no association between intakes of vitamins A, C, E or carotenoids from foods or supplements and cancer risk. The RR and 95% confidence intervals (CI) for the highest vs. lowest quintiles of vitamins A, C, E and total carotenoids were 1.09 (95% CI: 0.85-1.39), 0.98 (95% CI: 0.76-1.25), 1.07 (95% CI: 0.83-1.38) and 1.12 (95% CI: 0.86-1.45), respectively. Similarly, the use of multivitamins or specific vitamins A, C or E supplements was unassociated with risk. In subgroup analyses, several associations seemed to vary by postmenopausal hormone use. Our results suggest that there is no overall association between dietary antioxidant intake or use of antioxidant supplements with risk of endometrial cancer.

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