Hunger is your body signalling your brain that you need nutrients. If you eat foods that cover all your nutrient requirements for a low number of calories and your body is taking up these nutrients properly, then you should have no problems. Thus it makes sense to inform people which foods they need to be eating as well as educate people on which disorders can cause poor nutrient uptake.
If you suffer from stress and you eat high calorie foods to feel better, changing your diet is likely going to exacerbate your stress, not make you feel better. I feel this is the case for many who are overweight.. stress management strategies should be the first priority as you won't be able to handle changing your diet for the long term until you get your stress under control.