Journal
BRITISH JOURNAL OF CANCER
Volume 106, Issue 11, Pages 1891-1898Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/bjc.2012.187
Keywords
diet; micronutrients; bladder cancer
Categories
Funding
- Intramural Research Program
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BACKGROUND: Despite many studies on diet and bladder cancer, there are areas that remain unexplored including meat mutagens, specific vegetable groups, and vitamins from diet. METHODS: We conducted a population-based case-control study of bladder cancer in Maine, New Hampshire, and Vermont. A total of 1171 cases were ascertained through hospital pathology records and cancer registries from 2001 to 2004. Overall, 1418 controls were identified from the Department of Motor Vehicles (< 65 years) and Center for Medicaid and Medicare Services (65-79 years) and were frequency-matched to cases by state, sex, and age (within 5 years). Diet was assessed with a self-administered Diet History Questionnaire. Unconditional logistic regression was used to estimate odds ratios (OR) and 95% confidence intervals (CI). RESULTS: Processed meat intake was positively associated with bladder cancer (highest vs lowest quartile OR: 1.28; 95% CI: 1.00-1.65; P-trend = 0.035), with a stronger association for processed red meat (OR: 1.41; 95% CI: 1.08-1.84; P-trend = 0.024). There were no associations between intake of fruits or vegetables and bladder cancer. We did, however, observe an inverse association with vitamin B12 intake (OR: 0.77; 95% CI: 0.61-0.99; P = 0.019). CONCLUSION: Vitamin B12 from diet may be protective against bladder cancer, whereas consuming processed meat may increase risk. British Journal of Cancer (2012) 106, 1891-1898. doi:10.1038/bjc.2012.187 www.bjcancer.com Published online 8 May 2012 (C) 2012 Cancer Research UK
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