What defines a food as ultra-processed?

A food is classified as ultra-processed primarily based on the presence of added ingredients that are not typically found in a home kitchen. This includes substances such as artificial flavors, colors, emulsifiers, preservatives, and sweeteners that are often used to enhance flavors, maintain texture, or extend shelf life. These added ingredients significantly alter the food's original state, making it far removed from its whole-food sources.

The definition emphasizes how ultra-processed foods often undergo multiple processing stages and may not resemble the original ingredients from which they were derived. This aspect is key in distinguishing ultra-processed foods from minimally processed or whole foods, which contain ingredients one would commonly use in home cooking. Understanding this distinction helps in making healthier dietary choices, as ultra-processed foods are often linked to various health issues, including obesity and chronic diseases.