Popped "butter" popcorn has approximately 4 grams per cup (it seems to vary on brand) and around 1 gram of fibre (so around 3 grams carbs per cup on average.

I would think (as with all foods) after induction try it (a little bit) and see how you react.

Be sure to count the carbs in your daily amount.

I guess the question is .. can you stop at a small amount (I know I can't).

Cheers
Kim