I gave a loaf of home made bread to a friend who cannot eat many carbs and no wheat. She ate it with no problem.
I use all organic flour and mostly whole wheat, with some barley flour and a bit of white to keep it lighter.
So, she had no problem. Usually it’s the type of carbohydrates. Non-organic refined flour can cause digestive problems that whole grain organic flour may not cause.
I’ve found that the more processed something is the less I want to eat it.