What can we make of an opening like this? "Everywhere Western ideas touch down, people get fatter. Urbanization is literally making us sick." What about China

What can we make of an opening like this? "Everywhere Western ideas touch down, people get fatter. Urbanization is literally making us sick." What about China? It has had some large cities for several thousand years now. Did people in China get fat 3,000 years ago? In the USA, since 1945, the trend has been away from the cities and towards. Why not write "suburbanization is making us fatter?" The article is on solid ground when it writes about insulin and fat. But nowhere does it offer much evidence about what is causing insulin resistance in the West. The truth is that this is still a subject of much research. There are a lot of theories out there, but no one is sure of the cause. The sentence "Urbanization is literally making us sick" is ridiculous.