Absolute bullshit.
The majority of North Americans eat cheap processed foods and Junk.
Some for convenience, but mostly as that is all they can afford....which thanks to cooperate America is dirt cheap these days.
Go to any city, drive to the poorest part of that town (Fat chubbys all over)
Now go to the rich side of town and you will find WAY more fit people....Not be course they work out more, but be course they eat well.
Take Vancouver, BC as an example
Go to Surrey, fat chunkies that actually make their car look like its doing a 90 degree turn while standing still
After that go to West Vancouver.....you will be shocked
And that pattern follows almost every mayor city over 1 million in population.