Overview
- A study published June 22 in Nature Medicine analyzed more than 154,000 UK Biobank participants and over 10,000 US All of Us participants and found that newer birth cohorts have larger gaps between biological age and chronological age.
- The researchers quantified cohort shifts: people in the UK born 1965–1974 had systemic aging 23% of one standard deviation higher than those born 1950–1954, and US participants born 1990–1999 showed a 92% higher standardized aging gap versus those born 1965–1969.
- Greater biological aging was associated with higher early‑onset solid‑cancer risk, with about an 8% relative increase per standard‑deviation rise in the age gap and roughly a 15% higher risk for people with the most advanced systemic aging.
- Proteomic analyses linked organ‑specific aging to site‑specific cancers, for example older‑appearing immune profiles with early‑onset lung cancer and older‑appearing adipose tissue with early‑onset colorectal cancer, but the study is observational and cannot prove causation.
- If confirmed by independent and longitudinal studies, these findings could shift prevention toward identifying high‑risk younger adults and prompt research into environmental and lifestyle drivers of accelerated biological aging as a potential cause of the roughly 24% global rise in cancers diagnosed under age 50 between 1990 and 2019.