Many Probiotics Are Contaminated with Traces of Gluten, according to study

Newswise — WASHINGTON, DC (May 15, 2015)

More than half of popular probiotics contain traces of gluten, according to an analysis performed by investigators at the Celiac Disease Center at Columbia University Medical Center (CUMC). Tests on 22 top-selling probiotics revealed that 12 of them (or 55%) had detectable gluten.  

Probiotics are commonly taken by patients for their theoretical effect in promoting gut health, though evidence of benefits is limited to a few clinical situations. “Many patients with celiac disease take dietary supplements, and probiotics are particularly popular,” said Dr. Samantha Nazareth, a gastroenterologist at CUMC and the first author of the study. “We have previously reported that celiac patients who use dietary supplements have more symptoms than non-users, so we decided to test the probiotics for gluten contamination,” said Dr. Nazareth.

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