Coeliac disease microscopic colitis, gluten ataxia, psoriasis, vitiligo, autoimmune hepatitis, dermatitis herpetiformis, primary sclerosing cholangitis, and more. Coeliac disease is caused by a reaction to gliadins and glutenins (gluten proteins) found in wheat, and similar proteins found in the crops of the tribe Triticeae (which includes other common grains such as barley and rye) and the tribe Aveneae (oats). Wheat subspecies (such as spelt, durum and Kamut) and wheat hybrids (such as triticale) also induce symptoms of coeliac disease. A small number of people with coeliac react to oats. Oats toxicity in coeliac people depends on the oat cultivar consumed because of
Gluten-free diet food bearing the claim in its labelling may not contain: Any food product that inherently does not contain gluten may use a gluten-free label where any unavoidable presence of gluten in the food bearing the claim in its labelling is below 20 ppm gluten. Gluten-free diet A gluten-free diet (GFD) is a diet that strictly excludes gluten, a mixture of proteins found in wheat and related grains, including barley, rye, oat, and all their species and hybrids (such as spelt, kamut, and triticale). The inclusion of oats in a gluten-free diet remains controversial, and may depend on the oat cultivar