Cost, good design, and knowledge of nutrition are all factors here. In short, it's less mentally costly in Europe to be fit, whereas in the US life is optimize

Cost, good design, and knowledge of nutrition are all factors here. In short, it's less mentally costly in Europe to be fit, whereas in the US life is optimized to minimizing healthy activity. I think it's a myopic take to observe a society-wide increase in obesity and shrug it off to not enough people watching their CICO.