Hi TT, I've read the same thing about the class of beta blockers and diabetes. My own doctor told me that doctors will frequently prescribe an ACE inhibitor because it seems to protect the heart and kidneys in diabetics. (There are several types of ACE inhibitors. I take the generic form of Accupril.) Evidently diabetes can lead to heart and kidney disease. I was already on Accupril for blood pressure when I was diagnosed as pre-diabetic and my doctor said if I hadn't already been on it, she would have put me on it just for that protection. Are you taking a beta blocker for high blood pressure? If you're concerned about the risk or complications it might have for diabetes, then you should talk to your doctor tomorrow. Good luck.