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 »Reading And Understanding Food Labels
Everybody is familiar with word search games where you must find words hidden in vast columns of primarily random letters. The words can be written vertically, horizontally, or diagonally. In addition, the words can be written left to right or right to left. I hate those kinds of word games! Unfortunately, the nutritional analysis labels of manufactured food products are a lot like word searches.
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