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      "statement": "# Hall and colleagues: ultra-processed diets and ad-libitum intake\n\nIn a randomized inpatient crossover trial of 20 adults, compared matched ultra-processed and unprocessed diets and observed higher ad-libitum energy intake and short-term weight gain during the ultra-processed period.\n\n## Scientific scope\n\nThe record is the exact 25-author 2019 Cell Metabolism trial. It studied 20 adults over two two-week diet periods in a controlled inpatient setting; it does not by itself establish long-term disease effects, population-wide policy outcomes or one universal causal mechanism.\n\n## Reading status\n\nThis is a source-linked WRS catalogue note. A full explanatory guide and independent scientific reconstruction have not been completed for this entry. Read the identified original work for its complete narrative and arguments.\n\n## People and systems\n\nKevin D. Hall; Alexis Ayuketah; Robert Brychta; Hongyi Cai; Thomas Cassimatis; Kong Y. Chen; Stephanie T. Chung; Elise Costa; Amber Courville; Valerie Darcey; Laura A. Fletcher; Ciaran G. Forde; Ahmed M. Gharib; Juen Guo; Rebecca Howard; Paule V. Joseph; Suzanne McGehee; Ronald Ouwerkerk; Klaudia Raisinger; Irene Rozga; Michael Stagliano; Mary Walter; Peter J. Walter; Shanna Yang; Megan Zhou\n\nThe named authors contributed to this scoped work; individual effort shares and later applications are not assigned by the byline.\n\n\n\n## Original sources\n\n- [PubMed record for the ultra-processed-diet trial](https://pubmed.ncbi.nlm.nih.gov/31105044/)\n- [PMC full text of the ultra-processed-diet trial](https://pmc.ncbi.nlm.nih.gov/articles/PMC7946062/)\n",
      "summary": "In a randomized inpatient crossover trial of 20 adults, compared matched ultra-processed and unprocessed diets and observed higher ad-libitum energy intake and short-term weight gain during the ultra-processed period.",
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