By Dr. Chinta Sidharthan Reviewed by Susha Cheriyedath, M.Sc. May 21 2025 Scientists have identified unique metabolic fingerprints in blood and urine that can objectively track ultra-processed food intake, paving the way for more accurate diet studies and new tools for public health. Study: Identification and validation of poly-metabolite scores for diets high in ultra-processed food: An observational study and post-hoc randomized controlled crossover-feeding trial . Image Credit: Rimma