" Learn to ignore these arguments: they are the stock-in-trade of snake oil salesmen. When you don’t have real evidence, it’s easy to find a version of your pet theory in some old book. Chinese sages with long beards, wise old women prescribing natural folk remedies—these are characters from fairy tales, not trustworthy sources of medical information. "

― Alan Levinovitz , The Gluten Lie: And Other Myths About What You Eat