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More than half of gluten free pizza, pasta tested positive of gluten presence

Devdiscourse News Desk | Washington DC | Updated: 06-04-2019 14:11 IST | Created: 06-04-2019 13:05 IST
More than half of gluten free pizza, pasta tested positive of gluten presence
The manufacturer supplied 5,624 food tests by 804 users over 18 months. The research showed 32 per cent of tests revealed detectable gluten in dishes that were supposed to be gluten-free. Image Credit: Pixabay

A recent study has revealed that even tiny amounts of gluten in foods are troublesome for people with celiac disease, and restaurants may be the most difficult places to avoid the protein. According to the American Journal of Gastroenterology, more than half of gluten-free pizza and pasta dishes in restaurants tested positive for the presence of gluten; about one-third of supposedly gluten-free foods had detectable gluten.

"Patients have long suspected that gluten contamination in restaurant foods is a frequent occurrence, and these results support that," said Benjamin Lebwohl, founder of the theory. "Our findings suggest that pizza, pasta and foods served at dinner were more likely to have a problem," he added. Lebwohl used data uploaded by users of the portable device Nima Gluten Sensor which are used by restaurateurs to test foods. The manufacturer supplied 5,624 food tests by 804 users over 18 months. The research showed 32 per cent of tests revealed detectable gluten in dishes that were supposed to be gluten-free.

Gluten-free pasta samples were positive in 51 per cent of tests; gluten-free pizza contained gluten for 53 per cent. Gluten was detected in 27 per cent of breakfasts, 29 per cent of lunches and 34 per cent of dinners. There are limitations to the data, notes Lebwohl. "Users may have uploaded results that surprised them the most.

Also, the device is very sensitive. To be labelled gluten-free in the U.S., a product must contain less than 20 parts per million. The device can detect levels as low as 5 to 10 ppm, which most do not consider clinically significant, so a 'gluten found' result does not necessarily mean 'unsafe for celiac disease.' Also, there are certain forms of gluten, such as fermented gluten. So both false positives and false negatives will affect this estimate," he said.

The researchers believe that most of the food available contains more of Gluten, so the responsibility lies in the hands of the food preparers to prepare food in such a manner that it does not affect the health of the people.


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