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Updated: May 2, 2026

Solid Plate-based Dietary Restriction in Caenorhabditis elegans
Published on: May 28, 2011
Reducing the strain on calorie restriction
John R Speakman1,2,3,4, Sharon E Mitchell1
1School of Biological Sciences, University of Aberdeen, Aberdeen AB24 2TZ, United Kingdom.
None:
Calorie restriction (CR) is a nutritional intervention known to delay aging and extend lifespan across a wide range of species, raising the possibility of similar benefits in humans. This apparent universality has been questioned by studies reporting shortened lifespan under CR in certain mouse strains. Here, we provide a short perspective on these conflicting findings. Using simple simulation analyses, we explored the apparent strain-specific effects on CR outcomes. Our results illustrate how experimental factors have confounded previous interpretations and led to overemphasis on genotype effects. Reproducible CR studies are crucial for understanding the true potential of CR as a broadly applicable intervention in aging.
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