Mixed
Small nucleolar size is a conserved cellular hallmark of longevity and metabolic health across multiple species, including C. elegans, Drosophila, mice, and humans.
This research identifies small nucleoli as a marker of longevity and metabolic health. While you cannot directly 'exercise' your nucleoli, interventions that promote longevity—such as dietary restriction and exercise—are associated with this cellular feature. For humans, combining modest caloric restriction with increased physical activity was linked to smaller nucleoli in muscle biopsies, suggesting this cellular change is a reversible marker of metabolic improvement.
We suggest that small nucleoli are a cellular hallmark of longevity and metabolic health conserved across taxa.
Why this rating
Strong evidence across multiple model organisms and human observational data, though human data is correlational and small sample size.
Source
Small nucleoli are a cellular hallmark of longevity
Varnesh Tiku et al. · Nature Communications · 2017
DOI 10.1038/ncomms16083
More from this paper
- NCL-1 (TRIM2/Brat) mediates lifespan extension in major longevity pathways by limiting nucleolar size and reducing fibrillarin expression.Strong
- Knockdown of fibrillarin reduces nucleolar size and extends lifespan in wild-type C. elegans.Good
- In humans, modest dietary restriction combined with exercise is associated with smaller nucleoli in muscle biopsies.Moderate
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