Researchers developed sex-specific biological aging clocks using large-scale phenotypic data, revealing distinct aging trajectories between men and women marked by specific metabolic and tumor marker signatures. These clocks identify critical transition points in aging that differ by sex, providing quantifiable markers for monitoring individual aging rates independent of chronological age.
Key Points
- Sex-stratified clocks reveal distinct aging transitions in men versus women
- Metabolic and tumor markers track systemic aging changes across sexes
- Biological age acceleration varies by sex and life stage
Longevity Analysis
Aging does not follow a uniform trajectory across populations. This work demonstrates that men and women experience distinct metabolic and endocrine shifts at different life stages, with measurable circulating signatures that reflect these transitions. Understanding sex-specific aging patterns enables more precise detection of when someone's biological systems are accelerating or decelerating relative to their chronological age—a critical distinction for preventive medicine. The identification of specific metabolic markers provides clinicians and individuals with objective measures to track aging rate and detect systemic dysfunction before it manifests as overt disease, shifting the focus from treating disease to monitoring and intervening during the transitions when aging accelerates.
Original published by Nature Aging, by Jiaming Li.