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Updated: May 9, 2026

Solid Plate-based Dietary Restriction in Caenorhabditis elegans

Solid Plate-based Dietary Restriction in Caenorhabditis elegans

Published on: May 28, 2011

Will calorie restriction work in humans?

Edda Cava¹, Luigi Fontana

¹Division of Geriatrics and Nutritional Science and Center for Human Nutrition, Washington University School of Medicine, St. Louis, MO 63130, USA.

|August 9, 2013

Summary

This summary is machine-generated.

Calorie restriction (CR) without malnutrition shows promise in extending lifespan and healthspan across species. While results vary in monkeys, CR offers significant protection against age-related diseases in humans.

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Area of Science:

Gerontology
Metabolic research
Longevity science

Background:

Calorie restriction (CR) without malnutrition is known to slow aging and extend lifespan in model organisms and rodents.
Long-term CR in rhesus monkeys has reduced incidence of type 2 diabetes, cardiovascular disease, cancer, and protected against age-associated sarcopenia and neurodegeneration.

Purpose of the Study:

To evaluate the effects of CR on lifespan and age-related diseases.
To investigate the discrepancies in CR's impact on lifespan between different monkey studies.
To understand CR's metabolic and hormonal adaptations and its potential benefits for human health and longevity.

Main Methods:

Long-term calorie restriction studies in rhesus monkeys (Wisconsin and NIA trials).
Comparison of CR effects on lifespan, disease incidence, and metabolic/hormonal markers between studies.
Analysis of CR's impact on human health markers, cardiovascular aging, and skeletal muscle.

Main Results:

CR has shown varied effects on average lifespan in rhesus monkeys, with significant increases only in the Wisconsin study.
Differences in diet composition and study design may explain discrepancies in survival and disease outcomes between monkey studies.
Many metabolic and hormonal adaptations seen in CR rodents were not observed in CR monkeys.
CR in humans shows protective effects against obesity, type 2 diabetes, inflammation, hypertension, cardiovascular disease, and reduces cancer risk factors.
CR improves cardiovascular aging markers and rejuvenates skeletal muscle transcriptional profiles in humans.

Conclusions:

CR's impact on lifespan in primates is complex and may depend on study design and diet.
CR, particularly moderate restriction with adequate nutrition, offers significant health benefits for humans, reducing risks for major chronic diseases.
Further research is needed to elucidate the interactions between CR, diet, exercise, and other factors on aging pathways.