Q: I seem to be very sensitive to gluten. My doctor tested me for celiac disease and it came back negative. Will you please provide some insight into this paradox?
A: It's not really a paradox. There are many people who experience a variety of symptoms from ingesting gluten, but like you they don't have celiac disease.
In celiac disease, the immune system attacks the lining of the small intestine when you ingest gluten. Celiac disease symptoms are many and varied. But the ones most people report are gas, bloating, diarrhea, constipation, joint pain, headache and fatigue.
Celiac disease also damages the nutrient-absorbing fingerlike projections, called villi, on the...