Michael Pollan's Omnivore's Dilemma

"So we find ourselves as a species almost back where we started: anxious omnivores struggling once again to figure out what it is wise to eat. Instead of relying on the accumulated wisdom of a cuisine, or even on the wisdom of our senses, we rely on expert opinion, advertising, government food pyramids, and diet books, and we place our faith in science to sort out for us what culture once did with rather more success. Such has been the genius of capitalism, to re-create something akin to a state of nature in the modern supermarket or fast-food outlet, throwing us back on a perplexing, nutritionally perilous landscape deeply shadowed again by the omnivore's dilemma."