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It may be Fructan, not Gluten, that is Upsetting People's Stomachs

It may be Fructan, not Gluten, that is Upsetting People's Stomachs
11/14/2017
medicalxpress.com

medicalxpress.com 

A team of researchers with several members from the University of Oslo in Norway and one with Monash University in Australia has found that the familiar bloating many people experience after eating foods containing wheat may be due to sensitivity to fructan, not gluten, as is commonly believed. In their paper published in the journal Gastroenterology, the group describes experiments they conducted with volunteers eating foods with and without fructan and gluten and what they found.

Having a sensitivity to gluten has become a trend of sorts—some people (as much as 13 percent of the population) experience bloating after eating foods that contain it, and because of that, seek foods such as gluten-free bread and pasta that are just as good. But now, it appears the blame for such bloating might be misplaced. Instead of looking for gluten-free foods, people may soon be looking for fructan-free foods.

Fructan is a type of carbohydrate found in wheat and also in other foods such as onions, garlic, and some other vegetables. Prior research has found a possible link between fructan and symptoms of irritable bowel syndrome. Because of that, the researchers wondered if it might be behind some other less-problematic digestive problems. To find out, they enlisted the assistance of 59 people who had self-diagnosed themselves with gluten intolerance—each was given muesli bars to eat over the course of several weeks and to write down any symptoms they experienced. Some of the bars had gluten, some had fructan and some had neither.

Afterward, the researchers studied the records kept by the volunteers and found that they experienced the familiar bloating only when eating the bars with fructan—they were fine when eating the controls and the bars with gluten. This, the researchers contend, suggests that it is fructan, not gluten that is causing widespread bowel problems. This is an important distinction, they also note, because some recent research has found that people who put themselves on a gluten-free diet may be at an increased risk of developing type 2 diabetes.

More information: Gry I. Skodje et al. Fructan, Rather Than Gluten, Induces Symptoms in Patients With Self-reported Non-celiac Gluten Sensitivity, Gastroenterology (2017). DOI: 10.1053/j.gastro.2017.10.040

 

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