Patients have long suspected that gluten contamination in restaurant foods is a frequent occurrence(Unsplash)
Patients have long suspected that gluten contamination in restaurant foods is a frequent occurrence(Unsplash)

Foods labelled ‘gluten-free’ not trustworthy

Diners avoiding gluten have to rely on menu labels, word of mouth and restaurant workers’ advice.
Indo Asian News Service | By Indo Asian News Service, New York
UPDATED ON APR 07, 2019 02:22 PM IST

Suffering from coeliac disease and want to avoid gluten? Then restaurants should be the last place you should visit as most foods labelled ‘gluten-free’ have gluten, suggest researchers.

The study, published in the American Journal of Gastroenterology, showed more than half of the gluten-free pizza and pasta dishes in restaurants had gluten and about one-third of supposedly gluten-free foods had detectable gluten.

Coeliac disease is an ailment in which the small intestine is hypersensitive to gluten, leading to difficulty in digesting food. Diners avoiding gluten have to rely on menu labels, word of mouth and restaurant workers’ advice.

“Patients have long suspected that gluten contamination in restaurant foods is a frequent occurrence, and these results support that. Our findings suggest pizza, pasta and foods served at dinner were more likely to have a problem,” said Benjamin Lebwohl, Assistant Professor at the Columbia Mailman School in the US.

For the study, 5,624 dishes were analysed using Nima Gluten Sensor and 32% of the tests revealed detectable gluten in dishes supposed to be gluten-free.

Gluten-free pasta samples were positive in 51% tests and gluten-free pizza in 53% cases. In addition, gluten was detected in 27% of breakfasts, 29% of lunches, and 34% of dinners.

Lebwohl suspects gluten-free foods are inadvertently contaminated and the solution may be better education for food preparers.

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