People can also experience an 'intolerance' to gluten.  Food intolerances are not thought to be immune mediated.  GI symptoms with wheat or gluten intolerance may include gassiness, abdominal pain, abdominal distension, and diarrhea.  These symptoms are usually transient, and are thought NOT cause permanent damage.

Patients with lactose intolerance, where the lactose sugar in diary products is not digested well, may also experience gassiness, abdominal pain, abdominal distension, and diarrhea.  Like gluten or wheat
intolerance, these symptoms will pass once the  lactose is out of the person's system, and will not cause permanent damage.