This was an engaging read. But the implication that urbanization causes obesity is not only unsupported by the author, but almost certainly fallacious. (Corre

This was an engaging read. But the implication that urbanization causes obesity is not only unsupported by the author, but almost certainly fallacious. (Correlation, after all, does not imply causation) The cause of obesity is quite clearly refined carbohydrates, and the greater prevalence among the less affluent is directly due to carbohydrates being less expensive per calorie than vegetables and meats. (This is exacerbated by a) 40 years of misinformed nutritional recommendations, and b) government financial incentives to the agriculture industry). Not only is the author wrong about the cause of this problem, but he is wrongheaded in his demonization of urbanization. There are very clearly measurable negative environmental impacts caused by suburbanization and exurbanization. Urbanites, OTOH, have a significantly smaller per capita environmental impact.