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Risk factors for bladder cancer. A risk factor is something that increases the risk of developing cancer. It could be a behaviour, substance or condition. Most cancers are the result of many risk factors. Smoking is the most important risk factor for bladder cancer. The risk of developing bladder cancer increases with age. It usually occurs in people older than 65 years of age. Bladder cancer is most common in Caucasians, and men develop this disease more often than women.
The exact cause of bladder cancer is unknown. It occurs when abnormal cells grow and multiply quickly and uncontrollably, and invade other tissues. Smoking increases your risk of bladder cancer. Smoking causes half of all bladder cancers in men and women. The following factors also increase your risk of developing bladder cancer: exposure to cancer-causing chemicals at work.