Don't mean to dis' popcorn but they neglect to mention the incredibly teeny tiny amount of vegetables most Americans eat when they make their comparison. And "one serving" of anything isn't much! One serving of generic vegetables is 1/2 cup Dr. Greger's recent video on kale said that Americans average something like 1 tsp per week of kale! If I remember right. And as far as calorie density goes, popcorn is approximately the same as unpopped dried corn, 1700-1900 cal/lb. Not a huge problem and fine to eat but if you are trying to loose weight, since popcorn eaten is mostly air, it will not give much satiation unless you eat a lot of it. Corn is a wonderful grain for sure, but if you are talking about polyphenols, you are talking micronutrients, and there's tons more micronutrients of much broader variety in vegetables. So my take on it is, enjoy some airpopped corn but eatchyer veggies!