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.
1 Celiac is also linked to other autoimmune disorders and is now believed to lead to osteoporosis, anemia, infertility and cancer if left untreated.  Inheritance: the genetics of Celiac disease is simplest of the automimmune diseases, with autosomal recessive inheritance and an environmental factor, gluten.