This advice is worth considerably less than what you paid for it, even if you got it for free:
I just get frustrated at all the unwanted health advice we seem to get pushed at us. There’s also a series of PSAs now about pre-diabetes, and there’s apparently a website you can go to if you are wondering “Am I pre-diabetic?” (I suspect it’s just a page with a big red YES written on it, and GO TO YOUR DOCTOR and DON’T EAT ANYTHING BUT VEGETABLES on there)
The page “Pre-diabetic” does not exist. You can ask for it to be created, but consider checking the search results below to see whether the topic is already covered.
I did eventually turn this up:
Fasting blood glucose levels are in a continuum within a given population, with higher fasting glucose levels corresponding to a higher risk for complications caused by the high glucose levels. Impaired fasting glucose is defined as a fasting glucose that is higher than the upper limit of normal, but not high enough to be classified as diabetes mellitus. Some patients with impaired fasting glucose can also be diagnosed with impaired glucose tolerance, but many have normal responses to a glucose tolerance test.
Allow me to point out that the only people with no risk factors are already dead, and they could not possibly care less about glucose levels.