In fact, men are four times more likely than women to get bladder cancer, probably because, historically, they've been more likely to smoke. Men also tend to urinate less frequently than women, which means that whatever toxins or carcinogens are in the urine stay in the bladder longer.
Smoking causes nearly half of bladder cancer deaths in men and more than a third in women.
Others at risk include those who are exposed to chemicals called aromatic amines. Painters, as well as people who work in the leather, rubber, dye, and aluminum industries often use these compounds.