China definitely does not have the world's highest prevalence of obesity.
...
But that's totally misleading data,
As the saying goes, China is a land of contrasts. It is a country with the unique problem of trying to solve malnutrition and obesity at the same time (or at one time). But to say that all the skinny people balance out the fat people doesn't give a clear outline of what we're talking about.
I'll totally agree that just because Beijing has more millionaires than NYC doesn't mean I'm rich. And just as there's a poverty gap, so is there a gap between over-nutrition and undernutrition, but the difference is that the latter is skyrocketing in China, climbing so fast it will reach USA #1 levels sooner than later. Are we going to wait until then to finally call China "fat" when we're deep inside the epidemic now? Do we need to wait until we hit 35% of 1.3 billion before the Fat-wa is issued?
Doc, let's all get harmonious and agree: the warning signs are here, prediabetes is a thing, and so is the dangerous spectre of childhood obesity. And to bring it all back to the subject at hand, it's clear that bad eating habits are leading to unhealthy lifestyles for many urban residents... like indulging in all-you-can buffets... ones that haven't gone under, anyways.
With USA-styled serving portions slowly gaining acceptance in China, things aren't getting better as people remain commited to thinking that being overweight is just a problem for unmarried women under 27.