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.
A tendency to develop celiac disease is genetic (inherited). Celiac disease is most common among people of northern European descent. Celiac disease is not always recognized because the symptoms can be mild and can be wrongly blamed upon other common intestinal issues. Celiac disease can be diagnosed at any age.