The typically turns over every 5 - 7 days. However, the actual time you need to completely heal an inflamed gut depends on the extent of the damage, age, and other health factors. In very healthy people, their gut lining[custom-citation id="ref-38"] can recover from a gluten-containing meal within a few hours. For those experiencing inflammatory symptoms, they need to both heal the gut lining and calm the whole body’s immune system, which typically takes a few months. For example, the gut lining of celiac disease patients[custom-citation id="ref-39"] go through autoimmune attacks, so that most of the structures are destroyed. Once they stop eating gluten, it can take years for the gut lining to completely recover.