I have a piece up at Dissent’s website that discusses eating habits of the working poor over the centuries. Occasioned by New York City mayor Michael Bloomberg’s proposed ban on soft drinks 16 ounces or greater, my piece reveals that the economically disadvantaged didn’t always eat poorly. Indeed, history demonstrates that the opposite is true: Unhealthy eating habits don’t develop as a result of instinct; they have to be learned — and a processed-food industry stands ready to teach them.