MEANING : (n.) an intelligent person with a non-social obsession (such as computer programming) that renders him/her annoying or unattractive.
Celiac disease is believed to be an autoimmune disorder. While genetics appear to play a role in causing it, some people at risk for celiac disease will not develop it until something triggers their immune system, such as a viral infection or severe emotional stress. An Introduction to Celiac Disease and Its Causes.
Celiac disease is an autoimmune disorder that causes the immune system to overreact to two proteins in gluten, which is found in wheat and other grains. If a person with celiac disease eats gluten, it can trigger an immune response that damages their intestines and prevents them from absorbing nutrients. The disorder affects about 2 percent people in Western populations, but the majority of people who have the condition may not know it, the researchers said.