--are among those that have a higher incidence of celiac among those possessing them, but it is not proof positive you have celiac; many with these genetic profiles (the DQ2, in particular, is very common among Europeans) do not have celiac.

Northern Europeans, specifically, are known to have a high incidence of autoimmune disorders anyway--rates of MS are higher among them, for example.

The DQ1 halotype is interesting in that there's been some work done, mostly by Dr. Hadijvassiliou from Finland, indicating that this particular group may be more likely to have non-gastric manifestations of gluten sensitivity, including neurologic manifestations like gluten ataxia or neuropathy.