Is the incidence and burden of cancer increasing among young individuals? An age-related analysis based on Global Burden of Disease Study and Surveillance, Epidemiology and End Results.
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Abstract
Background: 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.
Aims: This study aimed to analyse long-term trends of cancer onset age and assess their impact on cancer burden.
Methods: 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-onset cancers were defined as cases below the 1990 median age; late-onset cancers exceeded this threshold. Mean and median onset age were analysed globally (Socio-Demographic 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-adjusted life years for younger and older age groups.
Results: 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-onset cancers exhibited a trend towards earlier onset in low SDI regions, while the burden remained greater in high SDI areas.
Conclusions: 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.
期刊介绍：
The Internal Medicine Journal is the official journal of the Adult Medicine Division of The Royal Australasian College of Physicians (RACP). Its purpose is to publish high-quality internationally competitive peer-reviewed original medical research, both laboratory and clinical, relating to the study and research of human disease. Papers will be considered from all areas of medical practice and science. The Journal also has a major role in continuing medical education and publishes review articles relevant to physician education.
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