How Many Cancers Are Caused by the Environment?
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May 21, 9:57 pm
How Many Cancers Are Caused by the Environment?
How Many Cancers Are Caused by the Environment?
Some experts say a decades-old estimate that six percent of cancers are due to environmental and occupational exposures is outdated and far too low
Traces of chemicals known to cause human cancer lurk everywhere. But after decades of research, figuring out how many people might contract cancer because of them remains an elusive goal.<!--StartFragment-->
More than 60 percent of U.S. cancer deaths are caused by smoking and diet. But what about the rest?
A report by the President's Cancer Panel, released earlier this month, reignited a 30-year-old controversy among cancer experts and environmental epidemiologists about how large a role environmental factors play in the No. 2 killer of Americans.
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