Which doctor should I listen to??

Today we’re talking about getting conflicting information from various doctors and who to trust and who to listen to when you are newly diagnosed with celiac disease. Here is the email I  received:

"Hey Gluten Dude. I have just been diagnosed with Celiac disease at the Cleveland Clinic. They told me to have a local physician take care of the endoscopy and then gave me web sites and information; they were very thorough and very informative.
 
When I got back home, the local doctor told me this disease was not that bad and many overrated its effect on the body.
 
Cleveland clinic told me there was no cure, I just had to get checked and follow the diet. The new doctor told me Steroids would fix this just fine. I was warned by the clinic that steroids were only used if the villi was very inflamed and only for about a week and should be gluten free.
 
Clinic doctors told me that with my family history of cancer and heart disease I would need to be followed up on with a colonoscopy and endoscopy every one to two years. The new doctor says five to ten. Who is right here. Two conflicting things that are very different and no where to go. Thanks."