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Fiber, digestibility and transit time       10/20/07 05:46 AM Edit Reply Quote Syl Reged: 03/13/05 Posts: 5499 Loc: SK, CANADA By definition dietary fiber (IF and SF) consists of nondigestible carbohydrates and lignin that are intrinsic and intact in plants. No amount of grinding or chopping will change the digestibility of these fibers. Also, while cooking may change the amount of dietary fiber is does not change its digestibility. Since both types of fiber are nondigestible your body does not expend energy breaking them down into to molecules that can be transported from the GI tract into the blood stream. Both types of fiber require about the same amount of energy to move them along the GI tract. Generally speaking SF can slow gastric emptying and the transit time from the stomach to the colon. It does this by increasing the viscosity of the stomach chime. IF increases transit time. It does this by absorbing water causing it to swell and exert pressure on the intestinal wall. Theoretically, you can use the ratio of SF to IF to change the rate of gastric emptying and transit time from slower to faster. -------------------- STABLE: ♂, IBS-D 50+ years - Science of IBS The FODMAP Approach to Managing IBS Symptoms Evidence-based Dietary Management of Functional GI Symptoms: The FODMAP Approach FODMAP Chart & Cheatsheet The Role of Food & Dietary Intervention in IBS Print     Remind Me     Notify Moderator

Entire thread Some questions for TOTALLY stable IBS'ers AndrewIBSC 10/18/07 03:09 AM Re: Some questions for TOTALLY stable IBS'ers Sand 10/18/07 12:09 PM Re: Some questions for TOTALLY stable IBS'ers Snorkie 10/18/07 03:05 PM Re: Some questions for TOTALLY stable IBS'ers AndrewIBSC 10/18/07 01:35 PM Fiber, digestibility and transit time Syl 10/20/07 05:46 AM Re: Fiber, digestibility and transit time JodieKG 10/20/07 02:07 PM Re: Fiber, digestibility and transit time Syl 10/20/07 03:02 PM Re: Fiber, digestibility and transit time JodieKG 10/20/07 03:48 PM Re: Some questions for TOTALLY stable IBS'ers Sand 10/19/07 11:01 AM Re: Some questions for TOTALLY stable IBS'ers AndrewIBSC 10/20/07 06:09 AM Re: Some questions for TOTALLY stable IBS'ers Sand 10/20/07 02:42 PM Re: Some questions for TOTALLY stable IBS'ers Mhillqt 10/20/07 08:39 AM Re: Some questions for TOTALLY stable IBS'ers Syl 10/20/07 11:01 AM Re: Some questions for TOTALLY stable IBS'ers TATYANA 10/18/07 10:04 AM Re: Some questions for TOTALLY stable IBS'ers AndrewIBSC 10/18/07 01:38 PM Re: Some questions for TOTALLY stable IBS'ers cate3 10/18/07 08:08 AM Re: Some questions for TOTALLY stable IBS'ers Zara 10/18/07 10:34 AM RE: reply to Zara cate3 10/18/07 01:48 PM Re: RE: reply to Zara Zara 10/18/07 02:07 PM

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