I think the article pretty much answered its question about why people growing up poor have hard time regulating their food intake -- it's because their parents

I think the article pretty much answered its question about why people growing up poor have hard time regulating their food intake -- it's because their parents weren't smart and/or because these kids weren't taught about sugar overuse and calorie counting. I'm not sure why the following psychological reasons were offered: formerly poor people lose ability to understand when they are not hungry anymore or that these people have to keep eating because of psychological disorders. I think really it comes down to this -- people growing up poor (and becoming better off because of better economic conditions) as a group were not taught or concerned about proper nutrition. What I'd really like to know if the participants knew how to do counting (calorie counting) and how many guys were part of the study. Having only female participants in the first 2 studies is kind of picking very narrow and unrepresentative pool. And females these days count their calories a lot, so it's not surprising they refused to drink soda and instead went for water. PS: the final study did include men, although didn't state how many.