Many probiotics are contaminated with traces of gluten

More than half of popular probiotics contain traces of gluten, according to an analysis. Tests on 22 top-selling probiotics revealed that 12 of them (or 55%) had detectable gluten. Gluten is a protein found in wheat, rye, and barley, and patients with celiac disease need to eliminate it from their diet or face pain, bowel symptoms, and an increased risk of cancer.

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