Ok,
If you've been restricting carbs for a while, how long have you been eating carbs for?
What amount did you restrict to, and then increase to.
It probably affects where you've started to store the excess glucose, whether as a short term store or long term fat.
I'm just out to lose weight myself, so I'm on low calorie diet, low fat and avoiding bad carbs.
I wouldn't call it low carb myself, but as I'm restricting my calorie intake overall, I guess it would actually be low carb by default.
It's certainly brought my bs levels, cholesterol, and weight down.