Welcome to healthcare magic.The only possible treatment method available for Celiac disease
is life long gluten free
diet,which could also help to improve the secondary conditions which would occur with Celiac disease such as Hashimotos thyroiditis
.But usually thyroid hormone medications also given so that symptoms of hashimotos thyroiditis could be reduced.It would be good if you take the opinion of your treating doctor regarding thyroid hormone medication.
Hope this answers your query.Will be available to answer your follow up queries.
wish you good heath.