{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,9]],"date-time":"2026-09-09T13:12:28Z","timestamp":1788959548858,"version":"build-2803163510"},"reference-count":44,"publisher":"Cambridge University Press (CUP)","license":[{"start":{"date-parts":[[2026,9,9]],"date-time":"2026-09-09T00:00:00Z","timestamp":1788912000000},"content-version":"unspecified","delay-in-days":251,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Epidemiol Psychiatr Sci"],"published-print":{"date-parts":[[2026]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:sec id=\"S2045796026100821_sec1a\">\n                    <jats:title>Background<\/jats:title>\n                    <jats:p>Although adolescent depression has been linked to individual chronic conditions, its broader role in shaping multimorbidity risk remains understudied.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec id=\"S2045796026100821_sec2b\">\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>A total of 87,562 UK Biobank participants were included, of whom 18,851 had documented adolescent depression. Cox proportional hazards models were applied to evaluate associations between adolescent depression and 24 chronic diseases, followed by stratified analyses by sex and age. Two-sample Mendelian randomization (MR) was then conducted to infer causality for diseases showing significant associations. Genomic colocalization analyses were performed using relevant GWAS data to identify shared causal variants. Mediation analyses were performed to detect possible mediating factors, including the frailty index, KDM biological age acceleration, allostatic load and 30 circulating biomarkers.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec id=\"S2045796026100821_sec3c\" sec-type=\"results\">\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      Adolescent depression was associated with elevated risk for 12 chronic diseases, with strongest associations for hypothyroidism (HR\u00a0=\u00a01.29 [1.18\u20131.42]), diabetes (HR\u00a0=\u00a01.25 [1.13\u20131.38]) and chronic obstructive pulmonary disease (COPD) (HR\u00a0=\u00a01.74 [1.50\u20132.01]). Risks were notably higher among females and younger adults. MR confirmed likely causal relationships for hypothyroidism (OR\u00a0=\u00a01.45 [1.03\u20132.05]), diabetes (OR\u00a0=\u00a01.01 [1.01\u20131.02]) and COPD (OR\u00a0=\u00a01.04 [1.02\u20131.06]). Genomic colocalization revealed a shared genetic signal at the\n                      <jats:italic>CDSN\/PSORS1C1<\/jats:italic>\n                      locus between adolescent depression and hypothyroidism. Mediation analyses revealed disease-specific pathways: creatinine for hypothyroidism, testosterone for diabetes, KDM biological ageing for COPD and frailty index across all three conditions.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec id=\"S2045796026100821_sec4d\" sec-type=\"conclusions\">\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>Adolescent depression confers systemic vulnerability through genetic and metabolic mechanisms, with amplified risks in females and individuals aged \u226455\u00a0years. These findings support early, integrated interventions to mitigate long-term multimorbidity.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1017\/s2045796026100821","type":"journal-article","created":{"date-parts":[[2026,9,9]],"date-time":"2026-09-09T13:04:38Z","timestamp":1788959078000},"source":"Crossref","is-referenced-by-count":0,"title":["Adolescent depression as a systemic multimorbidity catalyst: integrated genetic and metabolic pathway analysis"],"prefix":"10.1017","volume":"35","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-1125-2732","authenticated-orcid":false,"given":"Wenming","family":"Wei","sequence":"first","affiliation":[{"name":"Xi\u2019an Jiaotong University"},{"name":"Promotion in Silk Road Region"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Bolun","family":"Cheng","sequence":"additional","affiliation":[{"name":"Xi\u2019an Jiaotong University"},{"name":"Promotion in Silk Road 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