Lewis advises on a range of topics including legislation and global nutrition policies. He has contributed to and written material for a variety of outputs including research publications, technical reports, food law updates, blog articles, white papers, book chapters, eBooks and guidance documents.
Lewis regularly presents on Campden BRI training courses and at a range of industry and academic events on the topics of nutrient profiling, High Fat Sugar Salt (HFSS) legislation, ultra-processed foods, and front-of-pack nutrition labelling.
Ideas developed from the author’s original article From Broad Concepts to Operational Definitions The debate around “ultra-processed foods” (“UPFs”) is entering a new phase. At the end of 2025, The Lancet published a 3-paper series on “UPFs”, covering health associations and policy recommendations1. Much of the evidence underpinning this classification comes from observational studies that…
