Connection between Diabetes and Prostate Cancer

I came across this on Gabe Mirkin's site:

Your body produces large numbers of cancer cells, and your immunity searches out and kills these cells. Diabetes damages a person's immunity and interferes with a person's ability to kill cancer cells. That's why people with diabetes are at increased risk for certain types of cancers. People who store fat primarily in their bellies are at high risk for diabetes and also prostate cancer. Even if they are not overweight, men who have very little fat in their hips may have high blood insulin levels and are also at increased risk for diabetes and prostate cancer. If you store fat primarily in your belly, cut back of foods that contain flour, such as bakery products and pastas, and foods that have added sugar. You are at increased risk for diabetes and probably prostate cancer.

J Natl Cancer Inst 2003 Jan 1;95(1):67-71. Insulin resistance and prostate cancer risk. Hsing AW, Gao YT, Chua S Jr, Deng J, Stanczyk FZ. A. W. Hsing, Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, MD.

Source: http://www.drmirkin.com/men/1706.html