Irritable Bowel Syndrome Message Boards

Not all fibers are fermented in the colon to produce gas and bloating. Some fibers like inulin are rapidly fermented while others like methylcellulose are slowly or not fermented at all. According to the Linus Pauling Institute at Oregon U "Pectins, beta-glucans, guar gum, inulin, and oligofructose are readily fermented, while cellulose and lignin are resistant to fermentation in the colon". Cellulose and lignins (not a carb) are found in insoluble fibers.

Also, it depends on the unique composition of the colonic flora in each individual. Some soluble fibers may cause some people problems while others with IBS can handled them with no difficulty. There isn't a universal answer as far as I know.

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STABLE: ♂, IBS-D 50+ years - Science of IBS

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The Role of Food & Dietary Intervention in IBS

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