I was reading an article recently (link below) talking about eating disorders and emotional eating. It covered the psychological aspect of binge eating in terms of the emotional reasons people pick up that block of chocolate and eat the whole thing.
In all the examples the type of food people were pigging out on was junk food. McDonalds, KFC, commercial chocolate, cakes, biscuits, and ice cream were some examples. Never once do you hear the story… and she was so upset she ate five bowls of salad and a whole watermelon.