And your point?
Was "If Americans (including our parents and grandparents) read one book on food, diet, nutrition, etc every ten years we'd be far healthier than we are at the current pace where such books typically populate the best sellers list" not clear enough? My point is that Americans follow trends such as Atkins, South Beach, vegetarianism, veganism, low fat, low carb, eggs are bad, eggs are good, wait - egg whites are good but the yolks are bad ($1 to Lewis Black), Rachel Ray, Oprah Diet, cabbage soup diet, slim fast, master cleanse, etc and have higher instances of diet related illnesses than cultures who generally eat what they've been eating for the past several centuries.
Alternatives will only be readily available when the consumer demands change. The consumer will not demand change until they learn and believe the truth.