re: Diet sodas -- how bad are they for you?

I was curious so I did blood sugar test for a week straight after using artificial sweeteners. I did a base test first thing in the morning, then drank coffee or a diet drink, then tested again 30 minutes later. I didn’t see any spikes in my blood sugar levels. I think only pre-diabetic people have an issue with this. I would still limit the amount of diet sodas every day.