Study: Most Cancers Result From Lifestyle, Not Bad Luck

“Genes are not destiny” seems to be the message from a new study looking at the relative risk of environmental factors on the development of cancer. In fact, says Yusuf Hannun, who heads the Stony Brook University Cancer Center in New York, bad genes and DNA mutations appear to play a relatively small role in whether someone develops cancer. More important, he says, are environmental exposures, such as inhaling tobacco smoke and eating red meat. "Around 70 to 90 percent of...

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