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Less than six hours of sleep a night raises colon cancer risk

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2011-02-10 08:21

Less than six hours of sleep a night is now found to raise the chances of colon cancer almost 50 percent, adding to the list of health risks that result from sleep deprivation.

Researchers from University Hospitals (UH) Case Medical Center and Case Western Reserve University School of Medicine believe new study findings are the first to show a link between colon cancer and lack of sleep in a study of 1,240 patients admitted to the hospital for colonoscopy.

Li Li, MD, PhD, physician in the Department of Family Medicine at UH Case Medical Center said, "To our knowledge, this is the first study to report a significant association of sleep duration and colorectal adenomas. A short amount of sleep can now be viewed as a new risk factor for the development of the development of colon cancer."

Adenoma is a lesion that can lead to colorectal cancer if left untreated. For the current study, patients admitted for colonoscopy were surveyed about quality of sleep, using the Pittsburgh Sleep Quality Index (PSQI). Compared to those reported seven or more hours of sleep each night, study participants who reported difficulty falling asleep, staying asleep and shorter sleep duration were found to be more likely to have colorectal adenomas.

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among the 1,240 patients studied, 338 were diagnosed with colorectal adenomas that was associated with sleeping less than six hours a night, even after adjusting for obesity, family history and smoking that are thought to also be contributing factors for colon cancer.

Dr. Li explains lack of sleep and the associated increase in risk of colon cancer is the same as having a first degree relative with the disease and also comparable to the risks of developing the disease from high intake of red meat.

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