Celiac disease is an autoimmune disease which is characterised by gluten intolerance. Gluten is a protein found in the seed of cereals such as wheat, barley, oats and rye. Symptoms can be atypical or absent both in children and adults, making diagnosis difficult. Symptoms of celiac disease can be weight loss, loss of appetite, fatigue, nausea, vomiting, diarrhoea, abdominal pain or stunted growth as well as infertility or recurrent miscarriages, although only marginally
70% of patients with celiac disease have not been diagnosed yet.