This book by David Kessler, The End of Overeating covers this very well.
Foods that are deemed more "palatable" by the food industry are foods that people want to KEEP eating, or can't put down. Usually they are high in sugar, fat, and salt.
I think this explains why I've been more successful just eliminating some foods, rather than trying to eat them in moderation. We all know that it's very hard to stop at just one, or even one handful. Most packaged snack foods are engineered that way, and they do "rewire" our brain chemistry which further stacks the deck against us.
About carb and sugar cravings, I really notice that if I have something full of sugar and fat, it's MUCH harder to adhere to my diet for about two days afterward. I'm better off staying away from the typical "cheat meal".