[ravel-bar-foo]

If the chemical contamination hypothesis were true, one would expect obesity to correlate with/lag industrial activity/contamination. I'm not sure that this is true. Obesity in Europe didn't start going up until the early 2000s, when Europe was transitioning to a more service-based economy. In Korea it has become a problem in the last 5 years (again, as the country deindustrializes), and in China it seems to be mostly a problem of the wealthy rather than a problem of the poor factory worker (and the factory worker is presumably exposed to more industrial contaminants).

That said, I have not yet read the SMTM piece, or looked at SMTM's data.