I would add that there is a societal question but also a personal question. On the broader level, it is difficult to travel around the developed world without being quite astonished at the significant number of large young people. The evidence is there that something is radically different; the way the average person in the West will experience their body during their adult life is changing dramatically. On the other hand, what does this mean for individual people? The issue of obesity raises a lot of very strong emotions, as well as guilt, shame and judgment. How to separate the potential public health issue of many people eating unhealthy diets, from the question of an individual person's quality of life? It is not always the best thing for a person to go through the emotional wringer of a very restrictive reducing program, even if it would statistically be better for their health; perhaps one would be much happier simply trying to really accept and delight in one's body. On the other hand, certainly there are many studies estimating huge rises in health care costs due to the growing weight of the general population, so simply pretending there is no problem on a general level is naive. I don't think we can begin to seriously address the number of obese children, for instance, until we as a society begin to think of our relation to food and to exercise in a different way, as Betsy also suggests.