A new review in Science challenges blanket warnings against ultra-processed foods, suggesting they may mislead the public since trials fail to show evidence of inherent harm. Lead author Faidon Magkos argues negative health effects stem from ingredients rather than processing methods, calling UPF classification a "crude branding" that risks consumer confusion.

Magkos' team examined five randomized controlled trials across the US, UK, Denmark and Japan, finding it difficult to attribute health issues to ultraprocessing itself. The food industry has lobbied against UPF reduction guidelines, maintaining nutritional composition, not processing, harms health. The review acknowledges associations between high UPF consumption and obesity but questions causation.

Processing generally improves food safety, shelf life, affordability and accessibility, Magkos notes. The problem arises when the UPF label conflates beneficial processing with nutritionally poor foods. While associations between UPF consumption and health issues exist, the science remains unsettled, with Magkos calling for experiments isolating specific processing techniques.