Buckwheat contains no gluten,[33] and so it may be eaten by people with celiac disease or gluten allergies. Many bread-like preparations have been developed. Buckwheat might possibly contain some proteins similar to those found in wheat gluten, but buckwheat, quinoa, or amaranth eaten in moderation apparently do not cause problems for most celiac disease patients.[34] Furthermore, alcohol-soluble "buckwheat proteins bear little molecular similarity to wheat prolamins and therefore their description as 'gluten' or 'gliadin' is unfortunate and can lead to unnecessary exclusion of valuable sources of dietary protein in gluten-sensitive individuals."[35] However unlikely, buckwheat can become contaminated with nearby wheat gluten if care is not taken during the growing, milling and processing phases in the supply chain.[35] Buckwheat is approved for the Gluten Free diet in Canada, Europe and Australia.[35]