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Smoking Linked to Some Colon Cancers


"You would normally expect to see a clear association with cancer when you have such a clear association between a risk factor and a precursor -- in this case, smoking and adenomas," Alfred I. Neugut, MD, PhD, tells WebMD. "This study suggests there might be a subset of colon cancers associated with smoking. If this is the case, that would explain why broader studies have shown no association."

Neugut was not involved with the study, but wrote an editorial accompanying it in which he urges other researchers to confirm the University of Utah findings.

"As any good research study does, Slattery's study answers several questions but also raises additional ones," he writes. "She and her colleagues provide one rationale why the smoking and colon cancer relationship has been so inconsistent; the question of why the smoking and adenoma relationship has been so consistent remains."



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