What about the coeliac condition in the family? How hereditary is it?

What about the coeliac condition in the family? How hereditary is it?

At least a part of the immune system can be influenced by heredity, and the inheritance of the coeliac condition is very common among blood relatives. Close relatives (parents, children, brothers and sisters) have a ten percent incidence rate, and with identical twins the incidence is at least seventy percent.