Food Therapy: Kidney Beans Uncooked May Induce Gastrointestinal Dysfunction

Kyle J. Norton, Master of Nutrients
Health article writer and researcher; Over 10.000 articles and research papers have been written and published on line, including world wide health, ezine articles, article base, healthblogs, selfgrowth, best before it's news, the karate GB daily, etc.,.
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Some articles have been used as references in medical research, such as international journal Pharma and Bio science, ISSN 0975-6299.

If you expect that herbal medicine will ease the symptoms of your illness immediately, you will be disappointed. Symptoms of the diseases can only be eased gradually, depending to stage of the treatment which directly address to the cause of the disease.

Kidney bean is popular food, with  kidney shape, strong flavor and color in reddish brown in nature, used often as an excellent dietary selection because of enormous health benefits with a good source of protein and minerals.

Raw or undercooked kidney beans (Phaseolus vulgaris L.) may cause chronic indigestion inducing functional permutation in various gastrointestinal tissues, a study by renowned institutes suggested.

In 20 young male rats randomly divided into two groups of 10 rats, the first group served as the control and gavaged with 300 mg of a rodent pellet flour suspension (RPFS)anf the second experimental group challenged with 300 mg of a Beldia bean flour suspension (BBFS) for 10 days, group fed with white kidney bead suspension demonstrated intestinal alterations characterized by abnormal of shaggy hair. tiny hairlike folds in the plasma membrane that extend from the surface of many absorptive or secretory cells with short and dense or long and slender features.

Dr. Nciri N the lead author also found that group fed with 300 mg of a Beldia bean flour suspension (BBFS) also experience the distorted function of jejunum and disturbed hydroelectrolytic balancing.
Also in the same study groups, oral intake of beldia bean flour suspension (BBFS) group exhibited increased levels of phytohemagglutinins (PHAs), a toxic protein found in extracted from the kidney bean in interaction with a mucous membrane in the small intestine.

The presence of immunogenic intraluminal PHAs  was found within 3-4 h after the oral intake of the BBFS.

The interaction of the toxic compound with a mucous membrane in the small intestine, may be potentially resulting in an inflammatory response, inducing digestive dysfunction.

Dr. Torres-Pinedo R. not the researcher in the above study said, "Lectins( found abaundantly in kidney bean) are contained in significant amounts in a great variety of products ingested in the human diet. This, and the demonstration of their harmful effects on intestinal epithelium in rodents, indicate a need for investigation of potential adverse actions of lectins on human intestine".

Truly, there is no doubt that raw and under-cooked kidney bean can contain certain toxic chemical compounds, which interfere with the digestive function, causing chronic digestion and in some cases serve intoxication.

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Sources
(1) Effect of White Kidney Beans (Phaseolus vulgaris L. var. Beldia) on Small Intestine Morphology and Function in Wistar Rats BY Nciri N1,2,3, Cho N3, Bergaoui N1, El Mhamdi F1, Ben Ammar A4, Trabelsi N5, Zekri S1, Guémira F5, Ben Mansour A1, Sassi FH1, Ben Aissa-Fennira F1.(PubMed)
(2) Identification and Characterization of Phytohemagglutinins from White Kidney Beans (Phaseolus vulgaris L., var. Beldia) in the Rat Small Intestine by Nciri N1,2,3, Cho N3, El Mhamdi F1, Ben Mansour A1, Haj Sassi F1, Ben Aissa-Fennira F1.(PubMed)
(4) Lectins and the intestine by Torres-Pinedo R.(PubMed)