Coeliac disease is a genetic autoimmune disorder where your immune system attacks the small intestine causing atrophy of the villi which leads to lack of nutrient absorption. It’s diagnosed by the presence of anti-Gildain antibodies in the blood and an intestinal biopsy showing the atrophy of the villi.

Gluten sensitivity is a condition where ingestion of gluten causes digestion problems and sometimes intestinal distress. The diagnosis is by elimination diet. There’s some research that suggests this is due to FODMAP digestion issues with the gut bacteria and it may be resolvable by removing and slowly reintroducing FODMAPs.

In both cases the solution is a gluten free diet. All traces of gluten must be removed from the diet. That’s everything that contains wheat, barley, rye and oats, along with everything derived from those grains and anything that has been in contact with those grains. You’ll have to read a lot of labels, and only eat out at restaurants that are known to have a proper allergy control policy. Also if coeliac specify when ordering as diet-fad gluten free people cause a lot of problems.

I have coeliac disease, feel free to ask anything.