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Published on: May 28, 2011
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Time-Restricted Feeding Promotes Longevity and Gut Health Without Fitness Trade-Offs.
Ann-Cathrin Hofacker1, Mirjam Knop1, Susanne Krauss-Etschmann2,3,4
1Zoology, Department of Molecular Physiology, Christian Albrechts University Kiel, Kiel, Germany.
Summary
Time-restricted feeding (TRF) extends lifespan and improves gut health in fruit flies, even with early-life intervention. This dietary strategy promotes healthy aging without impacting reproduction.
Area of Science:
- Gerontology
- Nutritional Science
- Microbiology
Background:
- Time-restricted feeding (TRF) shows metabolic benefits but long-term physiological effects are not fully understood.
- Investigating TRF's impact on aging and health is crucial for understanding its potential as a longevity intervention.
Purpose of the Study:
- To investigate the long-term effects of a 16:8 TRF regimen on lifespan, reproduction, gut health, and microbiota in Drosophila melanogaster.
- To determine if early-life TRF can confer lasting physiological benefits.
Main Methods:
- Utilized Drosophila melanogaster as a model organism to study TRF.
- Administered a 16:8 TRF regimen and assessed lifespan, reproductive output (female fecundity), gut homeostasis (stem cell proliferation, barrier integrity), and gut microbiota composition.
Main Results:
- TRF significantly extended lifespan, with benefits observed even when initiated in early adulthood.
- Longevity improvements occurred without compromising female reproductive fitness.
- TRF promoted gut homeostasis in aged flies by reducing intestinal stem cell proliferation and enhancing epithelial barrier integrity.
- TRF altered gut microbiota composition, increasing the relative abundance of gram-negative bacteria.
Conclusions:
- Short-term TRF interventions, particularly during early life, can yield significant long-term physiological benefits, including extended lifespan and improved gut health.
- TRF is a non-invasive strategy for promoting healthy longevity, potentially mediated by metabolic reprogramming or autophagy, without adverse effects on reproduction.
