Chlorinated Drinking Water and Bladder Cancer

Kenneth P. Cantor, Charles F. Lynch, Mariana E. Hildesheim, Mustafa Dosemeci,
Jay Lubin, Michael Alavanja and Gunther Craun
Epidemiology 1998;9:21-28


Researchers report that drinking chlorinated water is associated with a statistically significant 60 percent increase in bladder cancer among a population of 3,000 residents of Iowa, including all bladder cancer cases identified in Iowa during 1986-1989.

But the study is not convincing for a number of basic reasons:

In the end, chlorine is the most effective and inexpensive drinking water disinfectant. It's only too bad chlorine can't disinfect epidemiology.


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