> Chinese large cities are way more polluted than in the US yet they aren't particularly known for their obesity issues. You might be confusing China with Japa

> Chinese large cities are way more polluted than in the US yet they aren't particularly known for their obesity issues. You might be confusing China with Japan. China has well known issues with obesity. Particularly the male population does look far from healthy in any major city. Women not so much, but that can mainly be attributed to beauty standards where having a slim figure is extremely important. Somewhere around ~40% of the male population and 25% of the female population in cities are overweight. For obesity it's 20% and 10%.[1] Also I'm pretty sure that certain healthier groups hide the extent of the problem a lot. Be out and about at the right time and you'll wonder whether there's any healthy guys at all. Why? Even ignoring that pollution argument for a minute, China was a place where I actually struggled to not overeat. If you live and work in a city, eating every major meal at restaurants/street food places is perfectly normal there, and almost all of that food is ultra-processed and full of chemicals that will make you want to keep eating. With cheap, near-instantaneous, and ubiquitous delivery of almost everything, there's no financial, time, or logistical reasons to prepare your own food even while at home. By comparison the conveniences that we have in the west (Uber et al.) are laughable, as are any complaints that it is oh-so-hard to find affordable healthy nutrition. [1]https://dom-pubs.onlinelibrary.wiley.com/doi/10.1111/dom.15238 https://dom-pubs.onlinelibrary.wiley.com/doi/10.1111/dom.152...