[MrDunham]

The low calorie part is questionable. Popcorn has (off I remember right) quite a lot more calories than you'd expect.

Source: I started getting fat of popcorn every day and am typically considered skinny/fit. Then I read the label and got sad.

[Fezzik]

Unadorned popped kernels are relatively low calorie, I think - 3 cups is less than 100 calories. Popcorn is also a decent source of roughage.

[hombre_fatal]

Popcorn is 30cal per cup which is low calorie. Since you mention reading a label, the thing you’re getting fat from isn’t the popcorn but the fat added to it.

The comment you reply to specifically mentions oil-less popcorn which is a low calorie stack and a good source of fiber once you get used to not lathering it in butter or olive oil.

[xk_id]

No, the kernels are very low calorie. It all comes down to how much fats you use (if any).