Pasta is a very high carbohydrate food and must be eaten with extreme caution by diabetics. Here's some info I've learned (disclaimer - I am not a doctor!):
1. Test to see how your body reacts to pasta. No theory or research will tell you how your own body works.
2. Many of us try to consume less than 50 grams of carbs a day, total. In that context, a single serving of pasta could consume our entire day's allotment.
3. The longer you cook pasta, the more likely your blood sugar will spike. Overcooked pasta passes through your system quickly.
4. Consider Dreamfields Pasta (no I don't work for the company!). This pasta causes less of a blood sugar spike than regular pasta for many of us. Again, test it on your own body. There's no substitute for that.
I eat portion-controlled Dreamfield Pasta frequently. With this special pasta and many other techniques, I am near my ideal weight, and my A1C ranges from 4.7 to 5.1. I also have no complications from my Type 2 - so far.
Good luck with your eating plan!