Smokers at higher risk
You may be at risk for bladder cancer if you are over 50, male or smoke. 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
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.
In recent years, the incidence of bladder cancer has been rising slowly, for unclear reasons.
One sign of possible bladder cancer is blood in the urine, either enough to see with the naked eye, or traces detected through urine testing. But this doesn't always indicate cancer. It can also be - in fact, it usually is - a sign of infection or inflammation anywhere in the urinary tract, prostate problems, or a kidney stone. Or sometimes, simply having eaten beets can give the urine a reddish hue.
Still, if you have blood in your urine, you should call your doctor.