This is an excellent article on Celiac and Pancreatic insufficiency.
Coeliac disease and pancreatic exocrine insufficiency
Click the above link for the entre article. Below is a small excerpt:
Historically, after diagnosis and the introduction of a gluten free diet, coeliac disease patients who experienced ongoing gastrointestinal symptoms were frequently suspected of failing to comply with their dietary restrictions.
However, evidence from a new study shows that around one third of these patients actually have a severe pancreatic exocrine insufficiency, which can be successfully managed by enzyme replacement therapy. This important finding can help substantially improve the quality of life of these patients.