Fasting as Medicine: Mitochondrial and Endothelial Rejuvenation in Vascular Aging.
Level 5 - mechanism / opinion, no new human data
Narrative mechanistic review without original human clinical trial data or systematic synthesis
PubMed 41521387 · doi:10.1111/acel.70372
What was done
This narrative review synthesized current literature on mitochondrial and endothelial mechanisms underlying vascular aging, particularly within the neurovascular unit. It evaluated mechanistic evidence for time-restricted feeding/eating (TRF/TRE) as an intervention to support vascular and mitochondrial rejuvenation.
What was found
The abstract reports no numerical findings or empirical trial metrics. It summarizes that TRF/TRE activates adaptive nutrient-sensing pathways (AMPK and SIRT1), suppresses mTOR signaling, promotes metabolic switching to ketone utilization, restores mitochondrial function, and maintains neurovascular coupling and blood-brain barrier integrity.
Why it matters
It outlines a translational, non-pharmacological framework connecting intermittent fasting regimens to molecular repair pathways that could preserve cerebrovascular health and reduce cognitive decline.
Limits
As a narrative review, it presents mechanistic models rather than primary clinical data or systematic quantitative pooling. The abstract does not provide human sample sizes, effect sizes, clinical endpoints, or duration parameters for TRF/TRE.
Cited by
- supports Intermittent fasting and caloric restriction downregulate mTOR signalling and upregulate AMPK signalling, shifting cells from growth to repair mode.
- supports Intermittent fasting alternates the body between positive and negative energy balance, activating and deactivating mTOR and AMPK through metabolic switching.