> they are not the main cause Well, perhaps. If multiple different factors (say: car culture, ease of food delivery, prevalence of tasty-if-unhealthy food, pe

> they are not the main cause Well, perhaps. If multiple different factors (say: car culture, ease of food delivery, prevalence of tasty-if-unhealthy food, peer prestige via excess, and targeted advertising) -- or perhaps more -- combine, they can actually create an overriding sense of social acceptability that you then cite. In that sense, the social acceptability becomes a defensive moat for all of the problematic practices that have created the obesity problem in the first place; and rational people will join in defending the moat rather than questioning what is behind it.