Smoking increases risk of bladder cancer even more than previously thought, study finds.

Study authors believe that some known carcinogens may be significantly higher than they thought, and now they are calling for more research into cigarette content..

Most studies conducted between the 1960s and 1980s show that smokers are three times more likely to develop bladder cancer than non-smokers..

However, a study using data from nearly half a million people dating back to the 1990s shows that the risk for smokers increases fourfold..

Although previous studies have shown that women who smoke have a lower risk of developing bladder cancer than men, according to this study, both sexes are equally at risk..

In addition to the higher concentration of carcinogens in cigarettes, the increased risk may also be due to the fact that cigarettes of our time are different from the cigarettes that were smoked in the past.. The filter in modern cigarettes absorbs some of the nicotine from the smoke.. Because of this, the smoker, in order to get the required dose of nicotine, drags on deeper, which increases the risk of getting cancer..

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Approximately 70,000 new cases of bladder cancer are diagnosed each year in the United States, and about 15,000 deaths are due to the disease..

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