{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,9,11]],"date-time":"2025-09-11T22:32:06Z","timestamp":1757629926655,"version":"3.44.0"},"reference-count":36,"publisher":"Wiley","issue":"9","license":[{"start":{"date-parts":[[2025,7,10]],"date-time":"2025-07-10T00:00:00Z","timestamp":1752105600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"DOI":"10.13039\/501100013795","name":"Fujian Medical University","doi-asserted-by":"publisher","award":["2021QH1059"],"award-info":[{"award-number":["2021QH1059"]}],"id":[{"id":"10.13039\/501100013795","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Internal Medicine Journal"],"published-print":{"date-parts":[[2025,9]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Background<\/jats:title><jats:p>Cancer incidence patterns are shifting globally. The overall age profile and secular trends in cancer onset remain inadequately understood, and their impact on the global cancer burden unquantified.<\/jats:p><\/jats:sec><jats:sec><jats:title>Aims<\/jats:title><jats:p>This study aimed to analyse long\u2010term trends of cancer onset age and assess their impact on cancer burden.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Using data from GBD 2019 and SEER, trends in onset age of 29 cancer types were analysed in the United States and globally over three decades. Early\u2010onset cancers were defined as cases below the 1990 median age; late\u2010onset cancers exceeded this threshold. Mean and median onset age were analysed globally (Socio\u2010Demographic Index (SDI) stratified). Temporal trends were quantified using average annual percentage change. Age changes related to population structures were evaluated by fixing cancer incidence in 1990. Changes in cancer burden by age were evaluated using disability\u2010adjusted life years for younger and older age groups.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>In the United States, most cancers showed increasing onset ages. Globally, prostate cancer had a decreasing mean age, while nasopharynx, uterine and prostate cancers displayed declining median ages. The global cancer burden significantly increased for the older age group, surpassing the increase in the younger age group. A similar pattern was observed across SDI, except for low SDI. Notably, early\u2010onset cancers exhibited a trend towards earlier onset in low SDI regions, while the burden remained greater in high SDI areas.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>Most cancer types showed an increasing onset age in the United States and globally. Despite population aging, certain cancers had a younger onset age. Policymakers and healthcare systems should be aware of these trends and take appropriate action. The young generation should also stay vigilant about cancers with a younger onset age.<\/jats:p><\/jats:sec>","DOI":"10.1111\/imj.70126","type":"journal-article","created":{"date-parts":[[2025,7,10]],"date-time":"2025-07-10T12:35:03Z","timestamp":1752150903000},"page":"1463-1473","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Is the incidence and burden of cancer increasing among young individuals? 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