Popcorn is naturally low in calories and fat, and it's 100% gluten-free, says Largeman-Roth. It’s also naturally low in sugar. But despite being low-calorie, popcorn can be filling and ...

Low-calorie snacks should ideally be between 100 and 200 calories ... Two cups of air-popped popcorn contains: Popcorn is a healthy, low-calorie, low-fat snack. Because it's a whole grain ...