I would definitely talk to your child's pediatrician/ endocrinologist about this. Also, there is great information on the JDRF website www.jdrf.org. Once you get to that website go to Life with Diabetes then enter celiac disease and diabetes then search.
Celiac disease also referred to as gluten sensitive enteropathy (GSE), gluten intolerance, or celiac sprue, is considered to be the most under-diagnosed common disease today, affecting 1 in every 170 to 250 people in the USA. It is a chronic, inherited disease, and if untreated can ultimately lead to malnutrition.
The incidence of Type 1 Diabetes and Celiac Disease occurring together is about 7 - 12% in persons with either Celiac Disease or Diabetes. Interesingly enough both diseases are found in the same region on a specific HLA gene.
As far as celiac causing type 1 diabetes, I have certainly never heard this. Type 1 is an autoimmune disease that occurs when the beta-cells within the pancreas are gradually destroyed and eventually fail to produce insulin. Although the causes are not entirely know, scientists believe the body
I received some good information on celiac disease since my response -- The celiac experts advocate for greater awareness, hence more screening for celiac disease because undiagnosed celiac causes the immune system to be in constant