Smoking cessation has been shown to decrease the risk for tumor recurrence and progression. Smoking is a major risk factor for bladder cancer; patients who smoke have an estimated two to six times increased risk of developing bladder cancer compared with their nonsmoking counterparts.
Although increasing one's water intake has been endorsed as a means of diluting carcinogens and limiting their exposure in the bladder, research has not found conclusive benefit to support this recommendation. Similarly, though some experts advocate the use of multivitamin or vitamin A supplements as preventive against bladder cancer progression and recurrence, research to date has been inconclusive.
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Cite this: Kyle A. Richards. Fast Five Quiz: Bladder Cancer Management - Medscape - Jan 13, 2020.