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22 January 2007

Chlorinated water ups cancer risk

People who drink or bathe, shower and swim in chlorinated water may be at increased risk for bladder cancer.

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People who drink or bathe, shower and swim in chlorinated water may be at increased risk for bladder cancer, says a Spanish study in the American Journal of Epidemiology.

The researchers compared 1 200 people who were exposed to chlorination byproducts known as trihalomethanes (THM) to a similar number of people who weren't exposed, The Australian reported.

People who lived in areas where THM concentrations in the water were more than 49 micrograms per liter were twice as likely to develop bladder cancer than people who lived in areas where concentrations were less than 8 mcg per liter.

The study also found that people who were exposed to more than 35 mcg of THM a day through drinking water had a 35% increased risk of bladder cancer, The Australian reported.

People who showered or bathed in chlorinated water were 83% more likely to develop bladder cancer, and people who swam in chlorinated pools were 57% more likely to develop the disease -(HealthDayNews, September 2006)

Read more:
Bottled water beats cancer

 
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