So far as I know, the oldest in the English language at least, is Banting's Letter on Corpulence. Having lost weight and dramatically improved his health on a low carbohydrate diet. Banting wrote and self-published the book back in the Mid-Victorian era, and he distributed it for free.
Read More »Pick Your Passion! by Dana Carpender
Once you start paying attention to food advertising, you start to realize how much our attitudes about food have been shaped by it - and generally not for the better.
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