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Colorectal Cancer Health Center

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‘Western’ Diet Tied to Colon Cancer

Higher Death Risk and Recurrence Link Must Be Confirmed, Researchers Say
WebMD Health News
Reviewed by Louise Chang, MD

Aug. 14, 2007 -- The typical Western diet may be more than just hazardous to the health of patients treated for colon cancer. New research suggests it may be deadly.

Former patients in the study who ate the most red and processed meats, refined grains, fats, and sugars were about three times as likely to die or have their cancers recur as patients who ate these foods the least.

While there is no shortage of evidence linking the so-called Western diet to an increased risk for developing colon cancer, the study is among the first to examine the impact of such a diet on survival among patients treated for the disease.

The findings must be confirmed, but Dana-Farber Cancer Center oncologist Jeffrey Meyerhardt, MD, a researcher on the team, says they cannot be ignored by colon cancer patients or their physicians.

The study appears in the Aug. 15 issue of the Journal of the American Medical Association.

“Doctors who treat colon cancer patients need to have the conversation about diet,” he tells WebMD. “From my own experience I know that patients ask about this a lot. They want to know what they should be eating and whether they should be exercising. But it is hard to give recommendations without firm data.”

Diet and Death From Colon Cancer

The study included 1,009 patients treated with both surgery and chemotherapy for colon cancer that had spread to the lymph nodes but not to distant sites, such as the liver or lungs (stage III disease), between April of 1999 and May of 2001.

Patients were asked to fill out standardized questionnaires designed to identify their food preferences and dietary intake during and six months after undergoing chemotherapy.

Based on these findings, Meyerhardt and colleagues identified two major dietary patterns: the “Western” diet, characterized by high intakes of red and processed meats, sweets, refined grains, and desserts, and a diet defined by the researchers as “prudent,” which was high in fruits, vegetables, poultry, and fish.

Patients were followed for roughly five years, during which time 324 experienced recurrences of their colon cancer and 223 deaths occurred among these relapsed patients. Just 28 deaths were recorded among patients with no evidence of cancer recurrence.

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