Declaring itself as an independent risk. it's a big study. arthel: that's huge because a lot of people suffer from heart burn. you have spicy food, later you have heart burn. so how do you avoid that turning into throat cancer? >> well, that's really important because one of the major risk factors beside withs diet, which we'll talk about, is obesity. if you have a lot of weight around your belly area, that pushes the stomach, opens up, and reflux and acid can get up there. a lot of fatty foods can do that. anything that will open up that sphinter is going to be a problem. so chocolate, alcoho...