One might think that it's pretty obvious that if you give someone who has elevated blood glucose a drug designed to lower blood glucose, that the blood glucose level will probably go down. That's the logic behind all the diabetes medications -- they lower blood glucose in people with diabetes. But what if the person taking the diabetes drug doesn't have diabetes?

It's been well-recognized that some diabetes drugs will lower blood glucose (BG) in anyone taking them, even if the person's BG level...