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May 11, 2005

Fasting Serum Glucose Level and Cancer Risk in Korean Men and Women

Author Affiliations

Letters Section Editor: Robert M. Golub, MD, Senior Editor.

JAMA. 2005;293(18):2210-2211. doi:10.1001/jama.293.18.2210-b

To the Editor: The study by Dr Jee and colleagues1 presented evidence of an association between diabetes and cancer. We believe that these results are limited because they do not consider a number of important and independent risk factors for cancer in the data collection and analyses. First, the article does not report the number of patients who had diabetes but were undergoing treatment and therefore had a fasting blood glucose level within the normal range. It also does not specify if the patients with diabetes were taking insulin or other medications used to treat diabetes. Second, with the exception of smoking and alcohol, environmental exposure of the study participants to carcinogens such as dioxins was not included.

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