August 20, 2016

BUT NOW THEY AREN'T SPECIAL ANYMORE...:

Scientists who found gluten sensitivity evidence have now shown it doesn't exist : The scientific method in action. (JENNIFER WELSH, 8/19/15, BUSINESS INSIDER)

Although experts estimate that only 1 percent of Americans - about 3 million people - actually suffer from celiac disease, 18 percent of adults now buy gluten-free foods.

Since gluten is a protein found in any normal diet, Gibson was unsatisfied with his finding. He wanted to find out why the gluten seemed to be causing this reaction and if there could be something else going on. He therefore went to a scientifically rigorous extreme for his next experiment, a level not usually expected in nutrition studies.

For a follow-up paper, 37 self-identified gluten-sensitive patients were tested. According to Real Clear Science's Newton Blog, here's how the experiment went:

Subjects would be provided with every single meal for the duration of the trial. Any and all potential dietary triggers for gastrointestinal symptoms would be removed, including lactose (from milk products), certain preservatives like benzoates, propionate, sulfites, and nitrites, and fermentable, poorly absorbed short-chain carbohydrates, also known as FODMAPs. And last, but not least, nine days worth of urine and faecal matter would be collected. With this new study, Gibson wasn't messing around.

The subjects cycled through high-gluten, low-gluten, and no-gluten (placebo) diets, without knowing which diet plan they were on at any given time. In the end, all of the treatment diets - even the placebo diet - caused pain, bloating, nausea, and gas to a similar degree. It didn't matter if the diet contained gluten. (Read more about the study.)

"In contrast to our first study... we could find absolutely no specific response to gluten," Gibson wrote in the paper. A third, larger study published this month has confirmed the findings.

It seems to be a 'nocebo' effect - the self-diagnosed gluten sensitive patients expected to feel worse on the study diets, so they did. They were also likely more attentive to their intestinal distress, since they had to monitor it for the study.

Posted by at August 20, 2016 7:42 AM

  

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