Everyone has good points (but I think ibkr was saying he counts whatever fruits & veggies he eats toward his carb total rather than eating whoopie pies, which is good!)

Anyway, the essential question I was trying to get answered is if even such a slight indication of prediabetes could cause PN. Of course I need to heed these warnings whether or not it's causing it--I do understand that this is serious business all around. But it would be nice to know my enemy where the PN is concerned. And also nice to know that I can work to head it off before there's even more nerve damage.

Does anyone know how they determine diabetes as the cause? Or do they just assume if you have diabetes, that must be the reason?