Overview
- A large study published in Nature Medicine reports that people born in more recent cohorts show bigger gaps between biological age and their actual years, indicating faster systemic aging in younger generations.
- The researchers found that larger biological–chronological age gaps were tied to modestly higher risk of solid cancers diagnosed at 55 or younger, with the most advanced systemic aging linked to about a 15% higher early-onset cancer risk.
- The analysis identified organ-level links by using blood proteomics, for example showing older-looking immune signatures associated with early-onset lung cancer and older adipose (fat) signatures associated with early-onset colorectal cancer.
- The study combined multiple biomarker measures — including PhenoAge, the Klemera-Doubal Method, a metabolomic age score, and proteomic data — across more than 154,000 UK Biobank participants and more than 10,000 U.S. All of Us participants to estimate systemic and organ-specific aging.
- Authors say the work does not prove cause and that the next steps are to find the environmental and lifestyle drivers of these cohort shifts and to test whether biomarker-based risk screening can enable earlier prevention and targeted early detection for younger people.