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Ingestive experience with these foods can begin early in children, yet there is limited understanding of the impact of early life nutrition on the development of vagal afferent neurons necessary for coordinating appetitive and satiating behaviors. To address this gap, mice reared on a chow diet (control) were compared to those reared on a high-fat diet (HFD\n                  <jats:sup>EARLY<\/jats:sup>\n                  ). We demonstrate that the vagally-mediated satiation response to cholecystokinin (CCK) does not mature until adolescence in chow-reared mice. However, HFD\n                  <jats:sup>EARLY<\/jats:sup>\n                  exposure triggers a precocious maturation of this response, accompanied by transcriptomic changes in the nodose ganglion. Durable changes in appetitive behaviors were also evident in adult HFD\n                  <jats:sup>EARLY<\/jats:sup>\n                  mice, which consumed more lipid than control mice. Behavioral analyses point to alterations in orosensory processing and enhanced appetition in adult HFD\n                  <jats:sup>EARLY<\/jats:sup>\n                  mice. Furthermore, female HFD\n                  <jats:sup>EARLY<\/jats:sup>\n                  mice showed a selective increase in consumption of a calorie-dense liquid diet in adulthood, accompanied by changes in body composition, suggesting a lasting, sex-specific vulnerability to overconsumption of palatable, energy-dense foods. Together, these results establish nutrient exposure as a significant contributor to vagal circuit maturation and function.\n                <\/jats:p>","DOI":"10.64898\/2026.02.24.707784","type":"posted-content","created":{"date-parts":[[2026,2,26]],"date-time":"2026-02-26T19:20:18Z","timestamp":1772133618000},"source":"Crossref","is-referenced-by-count":0,"title":["Early ingestive experience with a high-fat diet tunes satiation and nutrient-specific appetitive behaviors"],"prefix":"10.64898","author":[{"given":"Meaghan","family":"McCoy","sequence":"first","affiliation":[{"name":"Developmental Neuroscience and Neurogenetics Program, The Saban Research Institute, Children\u2019s Hospital Los Angeles, Los Angeles, California, USA"},{"name":"Neuroscience Graduate Program, University of Southern California, Los Angeles, California, USA,"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ciorana","family":"Roman-Ortiz","sequence":"additional","affiliation":[{"name":"Department 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