Tobacco use - The most common risk factor is cigarette smoking. Smokers are 4 to 7 times more likely to develop bladder cancer than non-smokers.
Age - The chances of being diagnosed with bladder cancer increases with age. More than 70% of people with bladder cancer are older than 65.
Gender - Men are 4 times more likely to develop bladder cancer than women.
Chemicals - Chemicals used in the textile, rubber, leather, dye, paint, and print industries; some naturally occurring chemicals; and chemicals called aromatic amines and others can also increase the risk of bladder cancer.
Chronic bladder problems - Bladder stones, repeated infections and long term urinary catheters may increase the risk of bladder cancer.
Personal history - People who have already had bladder cancer once are more likely to develop bladder cancer again.