Dietary fiber: Difference between revisions
imported>Robert Badgett (→Medical uses: added more about fiber and colorectal cancer) |
imported>Robert Badgett |
||
| Line 4: | Line 4: | ||
==Classification== | ==Classification== | ||
===Soluble fiber=== | ===Soluble fiber=== | ||
Soluble fiber is viscous. It is in oats, oat ß-glucan, psyllium, barley, soybeans, dried beans and peas, and citrus.<ref name="urlNutrition Fact Sheet: Dietary Fiber, Nutrition, Feinberg School of Medicine">{{cite web |url=http://www.feinberg.northwestern.edu/nutrition/factsheets/fiber.html |title=Nutrition Fact Sheet: Dietary Fiber, Nutrition, Feinberg School of Medicine |author= |authorlink= |coauthors= |date= |format= |work= |publisher= |pages= |language= |archiveurl= |archivedate= |quote= |accessdate=}}</ref> Soluble fiber may affect cholesterol absorption more than insoluble fiber does. | Soluble fiber is viscous. It is in oats, oat ß-glucan, psyllium (ispaghula), barley, soybeans, dried beans and peas, and citrus.<ref name="urlNutrition Fact Sheet: Dietary Fiber, Nutrition, Feinberg School of Medicine">{{cite web |url=http://www.feinberg.northwestern.edu/nutrition/factsheets/fiber.html |title=Nutrition Fact Sheet: Dietary Fiber, Nutrition, Feinberg School of Medicine |author= |authorlink= |coauthors= |date= |format= |work= |publisher= |pages= |language= |archiveurl= |archivedate= |quote= |accessdate=}}</ref> Soluble fiber may affect cholesterol absorption more than insoluble fiber does. | ||
===Insoluble fiber=== | ===Insoluble fiber=== | ||
Revision as of 12:02, 14 November 2008
Dietary fiber is the "remnants of plant cell walls that are resistant to digestion by the alimentary enzymes of man. It comprises various polysaccharides and lignins."[1]
Classification
Soluble fiber
Soluble fiber is viscous. It is in oats, oat ß-glucan, psyllium (ispaghula), barley, soybeans, dried beans and peas, and citrus.[2] Soluble fiber may affect cholesterol absorption more than insoluble fiber does.
Insoluble fiber
Insoluble fiber is not viscous. It is in whole wheat and many vegetables.[2]
Medical uses
Consuming dietary fiber, especially the bran, may reduce the risk of diabetes mellitus type 2.[3]
Consuming dietary fiber may reduce the risk of colorectal cancer, especially in men.[4][5] However, this association is not consistent and not confirmed.[6]
Consuming dietary fiber may treat irritable bowel syndrome[7], chronic constipation[8], and hypercholesterolemia[9].
References
- ↑ Anonymous (2024), Dietary fiber (English). Medical Subject Headings. U.S. National Library of Medicine.
- ↑ 2.0 2.1 Nutrition Fact Sheet: Dietary Fiber, Nutrition, Feinberg School of Medicine.
- ↑ de Munter JS, Hu FB, Spiegelman D, Franz M, van Dam RM (August 2007). "Whole grain, bran, and germ intake and risk of type 2 diabetes: a prospective cohort study and systematic review". PLoS Med. 4 (8): e261. DOI:10.1371/journal.pmed.0040261. PMID 17760498. Research Blogging.
- ↑ Nomura AM, Hankin JH, Henderson BE, et al (September 2007). "Dietary fiber and colorectal cancer risk: the multiethnic cohort study". Cancer Causes Control 18 (7): 753–64. DOI:10.1007/s10552-007-9018-4. PMID 17557210. Research Blogging.
- ↑ Jacobs ET, Lanza E, Alberts DS, et al (February 2006). "Fiber, sex, and colorectal adenoma: results of a pooled analysis". Am. J. Clin. Nutr. 83 (2): 343–9. PMID 16469993. [e]
- ↑ Park Y, Hunter DJ, Spiegelman D, et al (December 2005). "Dietary fiber intake and risk of colorectal cancer: a pooled analysis of prospective cohort studies". JAMA 294 (22): 2849–57. DOI:10.1001/jama.294.22.2849. PMID 16352792. Research Blogging.
- ↑ Mertz HR (November 2003). "Irritable bowel syndrome". N. Engl. J. Med. 349 (22): 2136–46. DOI:10.1056/NEJMra035579. PMID 14645642. Research Blogging.
- ↑ Lembo A, Camilleri M (October 2003). "Chronic constipation". N. Engl. J. Med. 349 (14): 1360–8. DOI:10.1056/NEJMra020995. PMID 14523145. Research Blogging.
- ↑ Jenkins DJ, Kendall CW, Marchie A (May 2005). "Diet and cholesterol reduction". Ann. Intern. Med. 142 (9): 793–5. PMID 15867412. [e]