Ultraprocessed food research and scientific discourse

The ultraprocessed food debate has become increasingly polarized, with methodological critique often dismissed through rhetorical rather than scientific means. This Perspective argues for strengthening scientific rigour in ultraprocessed food research by examining how dietary assessment limitations, Nova classification ambiguities and residual confounding affect causal inference in epidemiological studies and short-term interventions. Distinguishing legitimate scientific concerns from industry-influenced opposition requires evaluating methodology independently of funding sources. Rigorous methodological scrutiny strengthens rather than undermines evidence-based public health policy.