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2d ago

Study Finds Kissing After Gluten Consumption Safe for Most with Celiac Disease

Preliminary research shows minimal gluten transfer through kissing, with water rinsing further reducing risk for celiac patients.

Eating foods with gluten can cause intestinal damage for those with celiac disease.
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Overview

  • A Columbia University study presented at Digestive Disease Week 2025 examined gluten transfer through kissing in 10 couples, one partner of whom had celiac disease.
  • Findings revealed that gluten transfer during kissing is minimal, with levels typically below the 20 ppm threshold considered safe for gluten-free products.
  • Drinking a small glass of water before kissing further reduced gluten levels in saliva, ensuring safer interactions for most celiac patients.
  • None of the celiac participants experienced symptoms after kissing, even in cases with slightly elevated gluten levels in saliva or urine tests.
  • The study has not yet undergone peer review, and experts note that individuals with extreme gluten sensitivity may need to take additional precautions.