Lots of things do: Your nausea may have little to do with the gut. Biliary ; pancreatic disease may be present. Gas/bloat syndrome? Consider "central" causes like: motion sickness, vertigo, migraine headache, brain problems (some very serious). Also, rule out infection (? Urinary tract), food poisoning, medication side effects, pregnancy, ; even stress. Yes, celiac disease may contribute, but best get checked.
Answered 2/6/2014
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