Hi, well my thoughts are that we are brainwashed by our mom much more than the stores as such. When I was small my mom would say eat, eat, eat. Eat when you are hungry and eat when you are sad. Eat when you are happy and eat when you want to celebrate.
So when we want to get healthy and we are sad, we eat. It is not like we don't want to be healthy, it is because we have been trained so when someone succeeds in being healthy it is a great accomplishments.
Brainwashed by religion is completely different. Look at all the cults committing suicide because of the impending judgement day. If people lived life like tomorrow was judgement day we probably would be eating. oh no! i said a bad thing.