celiac disease is a thing that some people have when you are allergic to gluten.

Gluten (say: gloo-tin) is a protein found in wheat, rye, and barley — grains that are in many everyday foods. Most of us eat food with gluten with no trouble. But for some people, eating gluten can cause a reaction in their bodies. Someone who has this problem has celiac (say: see-lee-ak) disease.

so that means that it's hard to know what you can eat and what you can't and you also can't have normal food like......
cake
white bread
wheat bread
pizza
and gluten is even found in some chips

I never want to have celiac disease but it's in my blood so I have a 50-50 percent chance that I'll have it, because my dad has it and my mom doesn't. Well I guess that's all I'm going to tell about
"the disease" right now.