(Reuters Health) – Current smokers diagnosed with colorectal cancer are more likely to die from it than former smokers or people who never tried cigarettes, a recent study suggests.
Researchers examined five-year survival odds for 18,166 people diagnosed with colorectal cancer and found current smokers were 14 percent more likely to die during the study period than people who never smoked. The effect was seen mainly among smokers treated with surgery but no chemotherapy, who were 21 percent more likely to die.
“We don’t know exactly how smoking causes colorectal cancer in this case or makes prognosis worse; however it clearly does just like in many other human cancers,” said Dr. David Weinberg of the Fox Chase Cancer Center in Philadelphia.
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