I am not diabetic.

I follow the belief that anything over 140 can cause nerve damage. I keep mine below that, at the 1 hour after first bite rule, which means I follow a low carb diet of below 30 carbs a day.

I am hypothyroid.

I definately have more flare ups on days when I cheat and eat too many carbs.

Have you considered natural hormone vs the synthetic??? A great wealth of info is at www.stopthethyroidmadness.com

I am on perscription nature-throid and not only is my tsh better but free T3 and T4 numbers are good too, which is something synthetics sometimes do not help.