Intake of specific dietary macro- and micronutrients has been implicated in modulating the risk of inflammatory bowel disease (IBD)(Nat Rev Gastroenterol Hepatol 2018;15:525-535). Recent epidemiological and pre-clinical studies have additionally examined the impact of non-nutritional dietary components on IBD. Ultra-processed foods (UPF), as defined by the NOVA classification, are foods of mainly industrial origin, often containing little or no whole foods but many ingredients including food additives such as artificial colors and flavors, stabilizers, emulsifiers, and preservatives(Public Health Nutr 2019;22:936-941).