Vitamins and Bladder Cancer

Contrary to previous studies, a new study suggests that commonly taken vitamins and supplements may not reduce the risk of urothelial carcinoma of the bladder.

Urothelial carcinoma is a type of cancer that generally occurs in the urinary system, which includes the kidneys and bladder. It is the most common type of bladder cancer, which develops when cells in the lining of the bladder begin to grow abnormally.

In a recent study, researchers evaluated data for 77,050 participants of the VITamins And Lifestyle (VITAL) study. At the beginning of the study, all participants completed questionnaires about supplement use and cancer risk. After 6 years, 330 cases of urothelial carcinoma were identified using the Seattle-Puget Sound cancer registry.

The researchers then analyzed potential associations between bladder cancer risk and supplement use, including multivitamins, beta-carotene, B vitamins, calcium, iron, magnesium, glucosamine, chondroitin, saw palmetto, ginkgo and others. No association was found between supplementation with any of the assessed vitamins and minerals and bladder cancer.

The authors concluded that commonly taken vitamins and supplements may not prevent urothelial carcinoma of the bladder. Additional research is necessary to confirm these findings.

For more information about bladder cancer, please visit Natural Standard's Medical Conditions database.

References
Hotaling JM, Wright JL, Pocobelli G, et al. Long-Term Use of Supplemental Vitamins and Minerals Does Not Reduce the Risk of Urothelial Cell Carcinoma of the Bladder in the VITamins And Lifestyle Study. J Urol. 2011 Feb 18. View Abstract
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