It can cause C too
09/11/07 02:10 PM
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Syl
Reged: 03/13/05
Posts: 5499
Loc: SK, CANADA
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Here is a quote from a recent review article (reference below)
Quote:
Patients judged adherent to the diet [excess fructose free diet] on specific criteria (77% of the group) did significantly better than those who were not. An important feature of this retrospective analysis was the high adherence rate (presumably related to the ongoing efficacy of the diet) which compared favourably with previous rates reported between 26% and 56%. The durability and high rate of symptomatic benefit across patients with both diarrhoea- or constipation-predominant IBS were encouraging.
The authors claim:
Quote:
The physiological consequences of their malabsorption include increasing osmotic load, providing substrate for rapid bacterial fermentation, changing gastrointestinal motility, promoting mucosal biofilm and altering the profile of bacteria. These effects are additive with other short-chain poorly absorbed ca rbohydrates such as sorbitol.
It is known that in some people excess fructose produces D by drawing water into the GI tract which can have a laxative effect. The exact mechanism of how fructose causes C is not fully understood. There is evidence that suggests it passes through the GI tract to the colon where certain bacteria may ferment it producing methane gas. C increases as methane in the colon increases. I believe I told you about methane in an earlier email.
Glad to see you didn't leave the board 
Reference
Gibson, P. R., E. Newham, J. S. Barrett, S. J. Shepard, and J. G. Muir, 2007: Review article: fructose malabsorption and the bigger picture. Alimentary Pharmacology & Therapeutics, 25, 349-363.
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