I really hate the term "prediabetes". Its relatively new and I still can't tell if its there to scare the crap out of you OR to find a way to push metformin on more people who probably don't need it. Not saying I don't agree those numbers mean your diet should be addressed but theres is something to the medical industry labelling things in a way that can really send u into a depression. I wouldn't fret over 5.7 A1c without having fasting and OGTT tests done first. The fasting being slightly above 100 is right at that magic guideline number. I would definitely ask for a 2-hour OGTT, that should confirm issues. Also, have you had fasting and A1C's done in years past? Sometimes you can just have a period where things are out of whack and you can an unusually high reading. Usually, with blood levels it doesnt happen overnight, you see a progression over time. There are some docs who believe that OGTT is the best test I would certainly ask for that. I would also consider getting a glucometer and doing random readings on your own. You can do your own testing and really get a good idea whats going on. Write down when you take the blood, before meals, 1 hour after, 2 hours after, 3 hours after. Take random readings. Take a reading after a high carb meal, or after a low carb meal, etc.. etc..

If your diet is good, i would look into taking high dose Benfotiamine to get your Blood sugar down. Especially in combination with R-Lipoic Acid you should see at least a 10 point drop overall.

We are finding out now that high cholesterol is not the danger we once believed it was. Burt for years people took statins when they had no reason to. All because the medical industry had to prescribe a magic pill to get you to meet a certain magic number. Just don;t let them push onto something like Metformin or the like. You're not in a danger zone. Always try to fix the issues the natural way if possible.