Bread containing azodicarbonamide (ADA, E927) is banned in Europe and Australia. ADA is used to make flour white and helps to keep products fresher for longer. This supplement may cause allergies and asthma. To produce instant mashed potatoes, butylhydroxyanisole (ВНА, Е320) is often used. The National Institutes of Health conducted several studies and concluded that this preservative is potentially harmful to human health. ВНА can also be found in other products like: frozen foods, soups, and mayonnaise. This substance is banned in Japan and some European countries.