In a related study presented at the same meeting, researchers at Simmons College in Boston found that women who consumed diets rich in foods that increase blood levels of C-peptide may be at higher risk for colorectal cancer. C-peptide is a blood marker of insulin secretion.
In the study, women who ate high amounts of red meat, fish and sugar-sweetened beverages and consumed lower amounts of high-fat dairy, coffee and whole grains had a 35 percent increased risk for colorectal cancer, the study showed. Also, those women who were overweight or sedentary were more vulnerable to the cancer-causing effects of this diet. The researchers suggest that high levels of insulin may promote cell growth and multiplication.
While the study found an association between this kind of diet and colorectal cancer, it did not prove a cause-and-effect.
Because these studies were presented at a medical meeting, the data and conclusions should be viewed as preliminary until published in a peer-reviewed journal.
The American Cancer Society provides a wealth of information on early detection and treatment of colon cancer.
SOURCES: Sidney S. Mirvish, Ph.D., professor emeritus, Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha; David Bernstein, M.D., chief, division of gastroenterology, North Shore University Hospital, Manhasset, N.Y.; Oct. 24, 2011, presentation, American Association for Cancer Research annual meeting, Boston
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