My digestive system has never functioned well if I ate too many carbs, but I feel fine if I stick to meat, eggs, cheese, veggies, nuts and some fruit and beans.
I do like pasta, baked potatoes, rice, etc., but have to watch how much I eat.
Dreamfields pastas are low-glycemic. They are available in my local grocery store, and they are indistinguishable from high-carb “regular” pasta. They come in black boxes, so it is easy to spot them on the pasta shelves.
My favorite is the Rotini.