I think this subject is much more complex than most of us qualified to answer. So a few questions instead. What is the link between our parents and grandparents diet, which has changed immensely since the advent of processed food and additives, and does it affect the genetic makeup of the children born after they had access to it and indeed those yet to be born? How much has the constant advertising of food products contributed to our increased food intake, and indeed the expectation of easily prepared food, combined with the message that it is a given that it as an instant form of self reward. Further more why do the ones who are suffering from the condition variously termed big boned, obese, fat, overweight or whatever always have strange haircuts that advertise there considerable presence usually dyed in a vivid hue not found in the usual range, coupled with the tightest clothes it is possible to imagine?