Journal
CANCER CAUSES & CONTROL
Volume 16, Issue 10, Pages 1135-1145Publisher
SPRINGER
DOI: 10.1007/s10552-005-0337-z
Keywords
bladder cancer; carotenoids; fruits; vegetables; vitamins
Funding
- NCI NIH HHS [CA55075, CA98566, CA87969] Funding Source: Medline
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Objective: To examine the relation between fruits and vegetables, carotenoids, folate, and vitamins A, C, E and the risk of bladder cancer in a prospective study of women Methods: A total of 237 incident bladder cancer cases were documented during 20 years of follow-up among 88,796 women enrolled in the Nurses' Health Study. Dietary intake was assessed by food-frequency questionnaires every two to four years and incident diagnosis of bladder cancer was ascertained every two years. Cox proportional hazard models were used to estimate incidence rate ratios (RR) and 95% confidence intervals (CI) for bladder cancer risk, adjusting for age, pack-years of smoking, current smoking, and total caloric intake. Results: Consumption of total fruits and vegetables was not associated with bladder cancer risk (RR = 1.08, 95% CI = 0.70-1.65, for > 5.5 compared to < 2.5 servings per day). Similarly, dietary intakes of carotenoids, folate, and vitamins A, C, E, were not related to bladder cancer risk. No association was observed between supplemental intake of multivitamins, vitamins A, C, E and bladder cancer risk. Conclusions: We did not observe any association for fruit and vegetable consumption or vitamin intake and bladder cancer risk among women.
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