An extensive survey reported in JAMA (July 6, 2005) showed that drinking coffee reduces risk for developing type II diabetes. However, two recent studies suggest that once you have diabetes, drinking coffee may be unwise.

Canadian researchers writing in Diabetes Care (March 2005) showed that caffeine significantly reduced insulin sensitivity. In the July 2005 issue of the same journal, scientists from Duke University Medical Center reported that drinking coffee could upset a diabetic