Irritable Bowel Syndrome Message Boards | Re: Fructose Malabsorption in IBS subtypes

Syl, I am not sure I understand this study yet.

They use Lactulose breath testing? Or hydrogen? Because Lactulose breath testing is a very inaccurate test.

Second, I am somewhat confused here on the term malabsorbtion as opposed to true fructose malabsortion or intolerence.

Large amounts of fructose can cause osmotic d

http://www.ibshealth.com/ibsfoods2.htm

The conclusion of the study was "Conclusions Carbohydrate malabsorption and ERBHAL are normal physiological phenomena. The abnormal patterns observed in Crohn's disease may have pathogenic importance."

FYI

Nutrition: Carbohydrate malabsorption in chronic intestinal disorders
Nature Reviews Gastroenterology & Hepatology 6, 9 (01 September 2009) ' doi:10.1038/nrgastro.2009.132
StandfirstMalabsorption of short-chain carbohydrates and an early rise in breath hydrogen after lactulose challenge do not necessarily indicate a chronic intestinal disorder.

Original article
Barrett, J. S. et al. Comparison of the prevalence of fructose and lactose malabsorption across chronic intestinal disorders. Aliment. Pharmacol. Ther. 30, 165�174 (2009). PubMed

Malabsorption of short-chain carbohydrates and an early rise in breath hydrogen after lactulose challenge do not necessarily indicate a chronic intestinal disorder.

Fructose malabsorption is a normal event," say lead researchers Jacqueline

"People with IBS and other functional gut disorders are no more likely to have fructose malabsorption than are healthy people,"

http://www.functionalglycomics.org/fg/update/2009/090910/full/nrgastro.2009.132.shtml

Fructose Malabsorption and Symptoms of
Irritable Bowel Syndrome: Guidelines for
Effective Dietary Management

"However, more than one in
three adults with symptoms of IBS are unable to absorb
a fructose load of 25 to 50 g and, therefore, have fructose
malabsorption (3,8,9). Second, fructose malabsorption is
not specific to patients with IBS. The limited data available suggest that its prevalence in the IBS population is similar to that in asymptomatic controls (9). As outlined
earlier, the response to fructose is exaggerated in patients
with IBS compared with those without IBS."

http://sacfs.asn.au/download/SueShepherd_sarticle.pdf

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My website on IBS is www.ibshealth.com

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