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 »KETO Foods – MANUFACTURER OUT OF BUSINESS IN 2005
KETO Foods - MANUFACTURER OUT OF BUSINESS IN 2005
Read More »