Think of any food, and you will find somewhere a scientist saying it's bad for you. What did your parents eat 40 to 50 years ago, prior to the low fat nonsense. every food stuff is a target to someone. Eat how your ancestors ate and you will be fine. Get a meter, and test immediately before eating and 2 hours after. If the rise is less than 2 mmol. Then that meal was fine for you. Your meter will never lie, and has no agenda so you can trust it. It may even show that you only need to alter a few items you normally eat. As pre diabetic you only need a slight improvement, Much less than those of us who are diabetic.
Great advice! I will get a meter and do that testing.
Out of interest, can fasting skew the results of tests? I'd have to bear that in mind after the no food days.