[jimbo2012]

Just Google it.

Swimming in chlorinated pools can cause an increased risk of cancer in bathers, Spanish researchers said on Monday.

Researchers from the Barcelona-based Center of Research in Environmental Epidemiology and Research Institute Hospital del Mar studied changes in indicators of mutagenicity — permanent mutation of the DNA — among a group of swimmers in an indoor chlorinated pool.

"The evidence of genotoxic effects were observed in 49 healthy adults after swimming for 40 minutes in a chlorinated indoor pool," CREAL said in a statement on Monday.

Researchers found indicators of an increase in cancer risk in healthy subjects as well as potential respiratory effects from the chlorine used as a disinfectant, the statement said.

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