Abstract
The term malabsorption has come to include both defective digestion and absorption. All ingested nutrients, i.e., fat, carbohydrate, proteins, minerals, H2O, and vitamins, normally enter the body via the gastrointestinal tract. It must be remembered that the absorbing surface of the digestive tract is not a one-way street. Therefore, in addition to oral food intake, a significant load of ‘endogenous nutrients’ is added to the intestinal contents of the alimentary canal. Complex nutrient molecules of both exogenous and endogenous origin undergo stepwise degradation to absorbable form and are transported into the intestinal cell also in a stepwise manner. Consideration of these steps and appreciation that absorbed nutrients exit from the intestinal cell, via either the portal vein or the lymphatic system, are essential to understanding malabsorption.
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© 1980 Plenum Press, New York
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Jones, J.D., Jones, M.A. (1980). Some Manifestations of Malabsorption in Disease. In: Brewster, M.A., Naito, H.K. (eds) Nutritional Elements and Clinical Biochemistry. Springer, Boston, MA. https://doi.org/10.1007/978-1-4613-3168-1_13
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DOI: https://doi.org/10.1007/978-1-4613-3168-1_13
Publisher Name: Springer, Boston, MA
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