Navigation Links
Dietary fiber alters gut bacteria, supports gastrointestinal health

URBANA A University of Illinois study shows that dietary fiber promotes a shift in the gut toward different types of beneficial bacteria. And the microbes that live in the gut, scientists now believe, can support a healthy gastrointestinal tract as well as affect our susceptibility to conditions as varied as type 2 diabetes, obesity, inflammatory bowel disease, colon cancer, and autoimmune disorders such as rheumatoid arthritis.

As these microbes ferment fiber in the intestine, short-chain fatty acids and other metabolites are produced, resulting in many health benefits for the host, said Kelly Swanson, a U of I professor of animal sciences.

"When we understand what kinds of fiber best nurture these health-promoting bacteria, we should be able to modify imbalances to support and improve gastrointestinal health," he said.

This research suggests that fiber is good for more than laxation, which means helping food move through the intestines, he added.

"Unfortunately, people eat only about half of the 30 to 35 grams of daily fiber that is recommended. To achieve these health benefits, consumers should read nutrition labels and choose foods that have high fiber content," said Swanson.

In the placebo-controlled, double-blind intervention study, 20 healthy men with an average fiber intake of 14 grams a day were given snack bars to supplement their diet. The control group received bars that contained no fiber; a second group ate bars that contained 21 grams of polydextrose, which is a common fiber food additive; and a third group received bars with 21 grams of soluble corn fiber.

On days 16-21, fecal samples were collected from the participants, and researchers used the microbial DNA they obtained to identify which bacteria were present. DNA was then subjected to 454 pyrosequencing, a "fingerprinting" technique that provides a snapshot of all the bacterial types present.

Both types of fiber affected the abundance of bacteria at the phyla, genus, and species level. When soluble corn fiber was consumed, Lactobacillus, often used as a probiotic for its beneficial effects on the gut, increased. Faecalibacterium populations rose in the groups consuming both types of fiber.

According to Swanson, the shifts in bacteria seen in this studywhich occurred when more and differing types of fiber were consumedwere the opposite of what you would find in a person who has poor gastrointestinal health. That leads him to believe that there are new possibilities for using pre- and probiotics to promote intestinal health.

"For example, one type of bacteria that thrived as a result of the types of fiber fed in this study is inherently anti-inflammatory, and their growth could be stimulated by using prebiotics, foods that promote the bacteria's growth, or probiotics, foods that contain the live microorganism," he said.


Contact: Phyllis Picklesimer
University of Illinois College of Agricultural, Consumer and Environmental Sciences

Related medicine news :

1. A Revolutionary Dietary Paradigm: New Cookbook Features A SOS-free (Salt, Oil, Sugar ) Diet That Delivers the Optimal Food Plan for Renewing Health
2. Dietary supplements increase cancer risk
3. Dietary changes help some children with ADHD
4. The Law Office of Wolf & Pravato, The Alters Firm and Morelli Ratner File Class Action Lawsuit Against Global Spray Foam Manufacturer
5. Brain Falters Near End of Life, but Games, Puzzles Might Slow Decline
6. Study supports urate protection against Parkinsons disease, hints at novel mechanism
7. Study Supports Value of Sigmoidoscopy, an Alternative to Colonoscopy
8. Gastroenterology Societies issue sedation curriculum for gastrointestinal endoscopy
9. Antibody therapy prevents gastrointestinal damage following radiation exposure in mice
10. Study examines how parenthood affects gay couples health, HIV risk
11. Exercise Program Boosts Health After Lung Transplant: Study
Post Your Comments:
(Date:12/1/2015)... ... December 01, 2015 , ... December 1, 2015 -- ... the company’s growing product line of food safety and seafood fraud prevention tools. ... nerka) – allow InstantLabs to offer fast, reliable species identification for the four ...
(Date:12/1/2015)... ... 01, 2015 , ... It’s official: Tattoo taboo is a thing of the ... among Millennials (a whopping one in three aged 18 to 25 is inked). As ... with their ink. In fact, RealSelf , the world’s largest community for learning ...
(Date:12/1/2015)... ... December 01, 2015 , ... The importance of volumetric ... the focus of numerous abstracts accepted for presentation here, at the 101st Annual ... abstracts highlight the use of Volpara Solutions’ quantitative breast imaging software tools for ...
(Date:12/1/2015)... CA (PRWEB) , ... December 01, 2015 , ... ... scale , Visage Imaging Inc. (“Visage”), a wholly owned subsidiary of Pro Medicus ... imaging results enhancements at the Radiological Society of North America (RSNA) 2015 annual ...
(Date:12/1/2015)... ... December 01, 2015 , ... McLean, VA., December 1, ... fixed price per sprint agile development contract to support the National Geospatial-Intelligence Agency's ... years, provides software engineering, infrastructure, as well as operations and sustainment support to ...
Breaking Medicine News(10 mins):
(Date:12/1/2015)... , Dec. 1, 2015 Relmada Therapeutics, Inc. (OTCQB: ... of chronic pain, announced today that the company will present ... held December 1-3 at the Luxe Sunset Boulevard Hotel in ... , CEO of Relmada Therapeutics, will present on Thursday, December ... . Please register at least 10 minutes ...
(Date:12/1/2015)... ANGELES , Dec. 1, 2015 CytRx ... development company specializing in oncology, today announced that it ... the company,s pivotal global Phase 3 clinical trial of ... (STS). Enrollment was originally estimated to be completed in Q1 ... being conducted under a Special Protocol Assessment from the ...
(Date:12/1/2015)... CHESTERBROOK, Pa. , Dec. 1, 2015 /PRNewswire/ ... leader, announced the launch of CareFront, a first-of-its-kind ... of patients diagnosed with cancer. Designed to be ... newly diagnosed cancer patients with resources for their ... costs. The program also offers tools to help ...
Breaking Medicine Technology: