Perspectives on Ultraprocessed Food Research

Beginning in 2009, a body of research in nutrition science emerged that focused on the health impacts associated with consuming foods labeled “ultraprocessed.” Since then, several organizations have proffered classification systems to categorize foods by degree of processing. However, to date, there is no recognized method to consistently and accurately apply these systems, including the Nova classification system, in research. This lack of consistency inhibits the ability of the scientific community to synthesize evidence-based conclusions about the impact of processed foods on health. Nonetheless, this body of work has impacted food policy globally. Continuous refinement of the definition of ultraprocessed foods, as well as a consistent use and implementation of a single definition across research studies, is necessary to build a robust evidence base and determine next steps needed for public health.