just how vulnerable the lack of stable culinary traditions leaves us to the omnivore’s anxiety, and the companies and quacks who would prey on it. So every few decades some new scientific research comes along to challenge the prevailing nutritional orthodoxy; some nutrient that Americans have been happily chomping for decades is suddenly found to be lethal; another nutrient is elevated to the status of health food; the industry throws its weight behind it; and the American way of dietary life undergoes yet another revolution.
