Human dietary fiber requirements experiment

And the more fiber you ingest,the more fiber-digesting bacteria colonize your gut.In a recent study, scientists exchanged the regular high-fiber diets of a group of rural South Africans with the high-fat, meat-heavy diets of a group of African-Americans.After just two weeks on the high-fat,low-fiber, Western-style diet,the rural African group showed increased inflammation of the colon,as well as a decrease of butyrate.That's a short chain fatty acid thought to lower risk of colon cancer.Meanwhile, the group that switched to a high-fiber, low-fat diet had the opposite result.