How would obesity rate be related to “exploitive labor” or “income gap?” It seems like you’ve got a hammer and are looking for a nail.

Obesity rates don’t follow any predictable pattern: https://en.wikipedia.org/wiki/List_of_countries_by_obesity_r.... The countries around the U.S. on the obesity scale are places like Egypt, Chile, Mexico, Saudi, etc. What do these countries have in common? Probably nothing other than idiosyncratic cuisine and lifestyle habits and maybe genetics (non-asian versus asian).