I guess I'm asking if we should take into account how these processes are "natural rewards" that encourage unhealthy behavior by addressing them with regulation. For example, fast food contributes immensely to increased negative health outcomes over the long term and because the people who eat fast food regularly are often poor/under educated about nutrition those costs get passed on to other consumers in the form of increased spending by Medicare etc. Maybe there should be a "sin tax" on fast food like there is on cigarettes to discourage this kind of thing while preserving individual freedom of choice