Biological age above chronological age linked to higher early-onset colon adenocarcinoma risk
In a Korean cohort of adults under 50, those whose biological age was greater than their chronological age had a higher risk of early-onset colorectal adenocarcinoma; no consistent link appeared for neuroendocrine tumors. [1]
Automatic summary · not editorially reviewed
The key findings
Biological age was estimated from nine routine blood biomarkers in 198,491 Korean adults under 50. [1]
People with biological age greater than chronological age had a 93% higher risk of early-onset colorectal adenocarcinoma. [1]
No consistent association was observed for colorectal neuroendocrine tumors. [1]
The source at a glance
- Study type / format
- Prospective cohort study (abstract)
- Population / context
- 198,491 Korean adults under 50 years of chronological age
- Summary based on
- Study abstract
- Original publication
- October 5, 2026
Biological age measured before cancer in under-50 Korean adults
The study asked whether accelerated biological aging is linked to early-onset colorectal adenocarcinoma, meaning cancer diagnosed before age 50. Biological age was estimated with Phenotypic Age, calculated from nine routine blood biomarkers. Acceleration was the difference between this estimate and chronological age. The cohort was prospective and included 198,491 Korean adults under 50 years of chronological age.
Supporting source [1]
Higher adenocarcinoma risk, no consistent neuroendocrine link
Over a median follow-up of 7.7 years, 127 early-onset colorectal adenocarcinomas and 142 colorectal neuroendocrine tumors were recorded through the National Cancer Registry. People whose biological age was greater than their chronological age had a 93% higher risk of adenocarcinoma (hazard ratio 1.93, 95% confidence interval 1.28–2.91). The association was stronger for colon adenocarcinoma (hazard ratio 2.32, 95% confidence interval 1.38–3.89). For neuroendocrine tumors, no consistent association was observed.
Supporting source [1]
Abstract-only scope of the cohort findings
The authors describe the association as independent and say biological aging measures could complement age-based criteria for risk stratification and screening. This is an association, not proof that accelerated aging causes these cancers. The analysis was adjusted for demographic, behavioral and clinical factors, and results held in subgroups including adults under 45 and in lag-time sensitivity analyses. Only the abstract was reviewed; the full text was not reviewed, so details of the models and screening history are not available here.
Supporting source [1]
How to interpret this
Abstract only; the full text was not reviewed. The study reports associations, not causes, and details of the models and screening history are not available from the abstract.
Based on the study abstract; the full paper, tables and supplementary data were not reviewed.
Source & supporting passages
Chang Y, Kim K, Wild SH, Byrne CD, Ryu S. · europepmc.org · October 5, 2026