Gluten is a protein found in wheat, barley, rye and is commonly present in food made from these grains such as bread, pasta, cakes and pastry. Coeliac disease is an autoimmune condition where the body reacts to gluten from the diet. When gluten is eaten, the body mistakenly attacks the digestive system, causing damage that impedes the body’s ability to absorb vital nutrients correctly. It is usually a lifelong condition that can be managed by following a gluten-free diet.