Intake of Raw and Incompletely Cooked Kidney Bean May Induce Toxicity

Hemagglutinating lectin, the main component isolated from several varieties of kidney bean (Phaseolus vulgaris) may induce toxicity, affecting abnormal development of microvilli of tiny hairlike folds in the plasma membrane of the small intestine, a respectable institute study suggested.

In South Africa, dried red kidney beans are prohibited for cultivation or consumption because of the potential toxicity to humans. However, the toxicity levels of hemagglutinating lectins activity in uncooked and incompletely cooked kidney bean is not higher in compared to the other bean varieties sold in the regions.

Researchers, in the compared toxicity of uncooked red kidney bean and other dried beans, found that toxic potentials and health risks associated with red kidney beans are similar to those of other dry beans already commercially available to South Africans. Therefore, the red kidney should have a commercial preference as of other beans.

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 its enormous health benefits with a good source of protein and minerals.

According to the recent advanced study, intake of raw kidney bean may cause lectin-induced disruption of intestinal in interference with the intermediate and final stages of nutrient break down in the gut.

Dr.Pusztai A, the lead author said, "In nitrogen balance studies it was found that rats ingesting pure bean lectins were in negative nitrogen balance" and "These nitrogen losses may have been partly the result of systemic effects, possibly caused by a selective uptake of lectins by the gut".
The poorly digested chemical compound actually disrupted borders cells and intestinal absorptive cells of the duodenum.

Taking together, regardless of levels of toxicity of bean varieties, epidemiological studies agreed that consumption of fully cooked kidney bean provides many nutrients with numerous health benefits. but kidney beans should not be eaten as raw.


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Author Biogrphy
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.,.
Named TOP 50 MEDICAL ESSAYS FOR ARTISTS & AUTHORS TO READ by Disilgold.com Named 50 of the best health Tweeters Canada - Huffington Post
Nominated for shorty award over last 4 years
Some articles have been used as references in medical research, such as international journal Pharma and Bio science, ISSN 0975-6299.

Sources
(1) The nutritional toxicity of Phaseolus vulgaris lectins by Pusztai A, Clarke EM, King TP.(PubMed)
(2) Recent advances in the study of the nutritional toxicity of kidney bean (Phaseolusvulgaris) lectins in rats by Pusztai A, King TP, Clarke EM.(PubMed)
(3) Red kidney beans--to eat or not to eat? by Venter FS1, Thiel PG.(PubMed)