Celiac disease has one treatment: a strict, lifelong gluten-free diet. Because the trigger is a normal food component rather than a drug, treatment depends more on sustained dietary education and on correcting the consequences of malabsorption than on any prescription.
The gluten-free diet
The diet excludes the prolamins of wheat, rye and barley, the three cereals whose proteins cross-react in this disease. Removing obvious bread and pasta is only the beginning: the difficulty lies in hidden gluten in processed foods, sauces and medication, and in cross-contamination during cooking and food handling. Pure, uncontaminated oats are tolerated by most people with celiac disease and can be part of the diet, but they must be certified free of contamination with wheat, rye or barley. Dietary education by a dietitian experienced in celiac disease is the single most useful intervention, because adherence, not the prescription, decides the outcome.
Monitoring response
Symptoms usually improve within weeks of starting the diet, and serology falls over the following months. IgA tTG (or anti-DGP where it is used) is therefore repeated to monitor adherence: a level that remains high after a reasonable period points either to continued gluten exposure or to an alternative explanation for the symptoms. Histological recovery of the mucosa lags behind both symptoms and serology and may take much longer, so a repeat biopsy is not part of routine follow-up and is reserved for specific questions.
Nutrient deficiencies and bone health
Untreated malabsorption leaves many patients deficient in iron, folate, vitamin B12, vitamin D, calcium and zinc, and these should be looked for and corrected rather than assumed to resolve with the diet alone. Because calcium and vitamin D absorption is impaired, bone mineral density is assessed, and patients with osteopenia or osteoporosis may need bone-directed treatment in addition to the gluten-free diet.
Vaccination and coexisting disease
Hyposplenism and splenic atrophy raise the risk of infection, so vaccination status — in particular pneumococcal vaccination — is reviewed. Associated autoimmune conditions such as autoimmune thyroid disease and type 1 diabetes are managed alongside the celiac disease.
When the diet does not work
Persistent or recurrent symptoms despite adherence to a gluten-free diet for more than 6-12 months define non-responsive celiac disease. The first question is whether gluten is truly excluded: adherence, hidden sources and cross-contamination account for most cases. If gluten exposure is excluded, other causes of the symptoms are considered, including microscopic colitis, irritable bowel syndrome, pancreatic insufficiency and small-intestinal bacterial overgrowth. When both symptoms and villous atrophy persist despite a strict diet, refractory celiac disease is suspected; it needs specialist referral and is discussed with the other serious outcomes in Complications of Celiac Disease.