For now, there is no certain way to prevent bladder cancer. The best plan is to avoid risk factors whenever that is possible.
Smoking is believed to cause nearly half the deaths from bladder cancer among men and more than a third among women.
If you work with a class of chemicals called aromatic amines, be sure to follow good work safety practices. Industries where these chemicals are commonly used include the makers of rubber, leather, printing materials, textiles, and paint products.
There is some evidence that drinking a lot of fluids mainly water can lower a person's risk of bladder cancer.
A diet high in fruits and vegetables seems to protect against bladder cancer.