Saturday, 6 July 2019

Navy Bean, the Legume which Promotes the Colon Health

By Kyle J. Norton

The Colon or large intestine formed part of the digestive system plays a critical role to remove waste and maintain the fluid and electrolyte balance.

The colon begins at the end of the small intestine and ends at the rectum. The colon consists of four parts: descending colon, ascending colon, transverse colon, and sigmoid colon.

More precisely, 
* The function of the descending colon is to store the remains of digested food that will be emptied into the rectum.

* The function of the ascending colon is to carry feces from the cecum superiorly along the right side of our abdominal cavity to the transverse colon.

* In the transverse colon,  water and nutrients are removed, and feces are formed.

* In the sigmoid colon, the feces are stored before leaving the body through the rectum.

Colon Health is an action or process that promotes a healthy colon.

Some researchers suggested that eating a nutrient-dense diet, including more fiber-rich foods is the best way to maintain a healthy colon.

Dr. Andrew T Kunzmann, the lead scientist wrote, "Elevated total dietary fiber intake was associated with a significantly reduced risk of incident distal colorectal adenoma".

And, "individuals consuming the highest intakes of dietary fiber have reduced risks of incident colorectal adenoma and distal colon cancer and that this effect of dietary fiber, particularly from cereals and fruit, may begin early in colorectal carcinogenesis".

The small, white navy bean, also called pea bean or haricot, popular in both dry and green forms, is very popular in Britain and the US, native to Peru. It is now grown and consumed across the world, due to their numerous health benefits.

With an aim to find a natural compound to improve the colonic functioning, researchers examined the effects of cooked navy bean on biomarkers of colon health and inflammation during colitis.

The study included C57BL/6 mice were fed a 20 % navy bean or black bean flour-containing diet or an isoenergetic basal diet (BD) for 2 weeks before the induction of experimental colitis via 7 d dextran sodium sulfate (DSS, 2 % (w/v) in the drinking-water) exposure. 

Based on the experiment results,
* Compared with the BD, both navy and black bean diets increased fecal non-digestible fermentable components SCFA and fecal phenolic compound concentrations.

* Injection of both bean diet demonstrated a strong effect on colitis by inhibiting the production of pro-inflammatory cytokines and exhibiting the production of the anti-inflammatory cytokines.

* Oxidative stress was significantly decreased in both bean treatment group compared to control.

Believe it or not, both bean diets were found to enhance DSS-induced colonic damage as indicated by an increased histological injury score and apoptosis.

In other words, the navy bean has a strong effect in reducing the inflammation of colitis, However, overdose, and long-term intake in patients with colitis may induce colonic mucosal damage.

Based on the finding, researchers wrote, "bean-containing diets exerted both beneficial and adverse effects during experimental colitis by reducing inflammatory biomarkers both locally and systemically while aggravating colonic mucosal damage".

Taken altogether,  navy bean  may be considered a remedy for the improvement of colon health, pending to the confirmation of the larger sample size and multicenter human study.



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Author Biography
Kyle J. Norton (Scholar, Master of Nutrition, All right reserved)

Health article writer and researcher; Over 10.000 articles and research papers have been written and published online, including worldwide health, ezine articles, article base, health blogs, self-growth, 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 Bioscience, ISSN 0975-6299.

Sources
(1) Cooked navy and black bean diets improve biomarkers of colon health and reduce inflammation during colitis by Zhang C1, Monk JM1, Lu JT1, Zarepoor L1, Wu W1, Liu R1, Pauls KP2, Wood GA3, Robinson L4, Tsao R1, Power KA. (PubMed)
(2) Dietary fiber intake and risk of colorectal cancer and incident and recurrent adenoma in the Prostate, Lung, Colorectal, and Ovarian Cancer Screening Trial by Andrew T Kunzmann,3,5 Helen G Coleman,3,5,* Wen-Yi Huang,4 Cari M Kitahara,4Marie M Cantwell,3 and Sonja I Berndt. (PMC)

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