I think this is just a convenient excuse, there were plenty of sedentary office workers in the 50s and 60s, and they weren't obese at nearly the same rates. It

I think this is just a convenient excuse, there were plenty of sedentary office workers in the 50s and 60s, and they weren't obese at nearly the same rates. It seems pretty clear from where I'm sitting that it's something dietary or environmental.