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 »NeanderThin: Eat Like a Caveman to Achieve a Lean Strong Healthy Body
In a revolutionary approach to weight loss and improved health, author Ray Audette presents his groundbreaking "caveman" diet—an eating program that stems from the notion that what we ate before agriculture and technology evolved is still what our bodies need to function effectively, stave off disease, and stay lean and healthy.
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