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By Walter L. Voegtlin
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Additional resources for The stone age diet: based on in-depth studies of human ecology and the diet of man
Example text
Dissolving the meat and fat in the stomach is possible because this organ has the ability to manufacture and secrete into its lumen a strong mineral acid called hydrochloric acid. This same material, under the name of muriatic acid, is used widely in industry as a solvent of many substances, including metals, minerals, and organic material. Foodstuffs are held back in the stomach until solution has occurred. The solubility of different materials varies widelyand as a consequence, some foods leave the stomach quickly, while others are retained for alonger period.
Has recognized this basic difference between plant eaters and flesh eaters. The forrner have been named herbivore; the latter, carnivore. Starvation might force a limited departure from this natural diet of each, but if this occurs, digestion and absorption are difficult and inefficient, as weIl as uncomfortable to the animaI. Nutrition is improved but littie, and the animal is not weIl. the diet of domestic animaIs as weIl as of man himself. As an example, consider the modern diet of the dog, a natural carnivore.
Proteins are broken down into a variety of amino acids, fats to fatty acids and glycerol, and digestible carbohydrates to glucose. The action of the pancreatic juice and a few weak and mconstant intestinal enzymes, constitute the entire digestive potential of the carnivorous animaI. These enzymes are alI produced by the animal itself. This point is of great importance, as will be se en when the carnivorous and herbivorous digestive mechanisms are compared. Meanwhile, back in the duodenum, other activities have taken place.