The standard answer is for almost all cases when something is low fat it has sugar added to make it taste better. I would double check to see if that's the case.
Sorry this might seem like a dumb question but what are you eating with the yogurt?
I am one of the people who have an insulin response to even the thought of sweet stuff, despite either not going ahead and eating it, or it being made with artificial sweeteners.
The standard answer is for almost all cases when something is low fat it has sugar added to make it taste better. I would double check to see if that's the case.
Sorry this might seem like a dumb question but what are you eating with the yogurt?