Type 2 Diabetics Should Avoid Caffeine
 (HealthDayNews, 7/26/04)

James D. Lane of Duke University Medical Center, and team, assessed the weekly caffeine consumption of 14 regular coffee drinkers who had mild type-2 diabetes and assigned each subject to take either two 125-mg caffeine capsules or a placebo with a commercial liquid meal (BoostR) that contained 75 grams of carbohydrates. The investigators assessed blood glucose levels before and after eating and taking the caffeine and found that, for the subjects on caffeine, glucose rose 21% and insulin 48%, compared to the placebo group; however, caffeine had no effect on blood sugar and insulin levels after fasting. The scientists conclude that caffeine (but not necessarily coffee) compromises carbohydrate metabolism in diabetic patients, making their condition worse.

(Diabetes Care, August 2004)