..."Few studies of free trade and investment agreements and diets isolated their impact from other factors, and none examined any effect on caloric intake, despite its critical role in causing obesity...." To borrow a phrase; what do facts have to do with it?!
Of course, there is that mighty variable called 'lack of self-restraint' among consumers. Companies have been catering to that for decades in practically every area of our lives; it's called advertising. I can remember when many thought 'advertising' would supply
information about a product!
That was the day of "World Book" and "Britannica" encyclopedias.