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This study aims to evaluate duration of untreated eating disorder (DUED) and duration\/characteristics of the preceding prodrome period in young people diagnosed with an ED.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>Fifty\u2010four young people (28 adolescents aged 13\u201317 and 26 emerging adults aged 18\u201325) with recent onset EDs (&lt;\u20093\u2009years) completed a retrospective onset interview and life chart. DUED, prodrome duration and prodrome characteristics (ED\u2010specific and more broad psychiatric symptoms) were compared according to developmental stage and diagnosis. The relationships between DUED and prodrome duration with early outcomes were evaluated.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>Emerging adults had a longer DUED than adolescents. This group also had a longer prodrome but only when broad psychiatric symptoms (i.e., not ED\u2010specific) were considered. Those with bulimia\u2010type EDs had a longer ED\u2010specific and broad psychiatric prodrome compared to those with anorexia\u2010type EDs. There were no significant developmental stage or diagnosis\u2010related differences in symptom severity during prodrome. In those who were underweight at presentation to services, a shorter broad prodrome duration was associated with greater weight gain after 3 months of treatment.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>When both ED and broad psychiatric symptoms are considered, DUED and prodromal symptoms of EDs differ according to developmental stage and diagnosis. Duration of prodrome may also impact early outcomes but further research is needed.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1111\/eip.70164","type":"journal-article","created":{"date-parts":[[2026,3,9]],"date-time":"2026-03-09T05:54:54Z","timestamp":1773035694000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Duration of Untreated Eating Disorder and Prodrome in Young People: Characteristics and Relationship to Early Outcomes"],"prefix":"10.1111","volume":"20","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-2030-084X","authenticated-orcid":false,"given":"Jessica","family":"McClelland","sequence":"first","affiliation":[{"name":"South London and Maudsley NHS Foundation Trust  London UK"},{"name":"Centre for Research in Eating and Weight Disorders King's College London, Institute of Psychiatry, Psychology and Neuroscience  London 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UAE"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mima","family":"Simic","sequence":"additional","affiliation":[{"name":"South London and Maudsley NHS Foundation Trust  London UK"},{"name":"Centre for Research in Eating and Weight Disorders King's College London, Institute of Psychiatry, Psychology and Neuroscience  London UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ulrike","family":"Schmidt","sequence":"additional","affiliation":[{"name":"South London and Maudsley NHS Foundation Trust  London UK"},{"name":"Centre for Research in Eating and Weight Disorders King's College London, Institute of Psychiatry, Psychology and Neuroscience  London 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