> The rule of thumb is that all carbohydrates harm blood glucose control.
This is untrue. Only simple carbohydrates harm blood glucose control. Complex carbs such as whole grains and fruit aid in it, in part thanks to their fiber. If you have a source that supports your claim, please share it, it must be bleeding edge nutritional science.
I've not seen any research showing that whole-grain carbohydrates have a lower impact on blood glucose than quick carbohydrates. We have only proof by repeated assertion.
My freestyle Libra CGM has recorded the impact of whole-grain products on my body. Whole-grain products consistently spike my blood sugar. 40 g of oatmeal or Bob's Red Mill 10-grain mix will push me up to 100-120 milligrams per deciliter. Whole-wheat pasta, 60g, will push me up about 150-200 mg/dL.
Eating more than 25 g carbs per meal pushes me up beyond 50 mg/dL at the one-hour mark. If I consistently let my blood sugar climb between 75 and 100 mg/dL at the one-hour mark, my fasting blood sugar starts to climb. This is how I learned that low-fat vegan was a bad diet for me. My A1c went from 6 to 7.8 in less than a year.
Too much dietary advice for diabetics is, at best, mythology.
This is untrue. Only simple carbohydrates harm blood glucose control. Complex carbs such as whole grains and fruit aid in it, in part thanks to their fiber. If you have a source that supports your claim, please share it, it must be bleeding edge nutritional science.