Study links cumulative obesity to accelerated biological aging in older adults
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Event tier C · Tier ceiling 74 · LONGIFI_SIGNAL_V1
Quick take
A longitudinal cohort study reveals that cumulative obesity and waist circumference are positively associated with accelerated biological aging, particularly in individuals with a low polygenic risk score for longevity.
What happened
Researchers published a study in GeroScience examining 687 older adults with a median age of 79.6 years from the Rugao Longitudinal Ageing Study (RLAS).
The researchers calculated cumulative exposures of body mass index (cBMI) and waist circumference (cWC) across 2014, 2017, and 2019 waves, comparing these to biological aging metrics evaluated in 2021: Klemera and Doubal method-biological age (KDM-BA) and physiological dysregulation (PD).
Both cBMI and cWC showed positive associations with KDM-BA and PD, whereas baseline obesity status was only associated with KDM-BA, but not with PD.
The positive association between cWC and KDM-BA was significantly more pronounced in participants with a low polygenic risk score for longevity, showing a potential modifying effect of genetic susceptibility.
Why it matters
The findings demonstrate that long-term cumulative metabolic exposure, rather than simple baseline measurements, is a primary driver of biological aging and physiological dysregulation in later life.
The study highlights that genetic predisposition to longevity can modulate the impact of visceral adiposity on aging rates, indicating that individuals with lower genetic protection are highly vulnerable to obesity-accelerated senescence.
Market impact
This clinical evidence strengthens the rationale for therapeutics targeting metabolic pathways to mitigate biological aging.
The research underscores the growing relevance of combining diagnostic biomarkers of biological age with genetic screening to stratify risk and personalize metabolic health interventions in aging populations.
What comes next
The clinical and commercial integration of polygenic risk scores with biological age diagnostics to target individuals who would benefit most from early, long-term metabolic management.
Sources
- NCBIPUBMED:LONGEVITY_RESEARCH