Beneficial effects of intermittent fasting and caloric restriction on the cardiovascular and cerebrovascular systems.
Level 5 - mechanism / opinion, no new human data
Narrative review synthesizing preclinical animal models and mechanistic pathways without systematic methodology.
PubMed 15741046 · doi:10.1016/j.jnutbio.2004.12.007
What was done
This narrative review synthesized literature on the effects of intermittent fasting (reduced meal frequency) and caloric restriction on cardiovascular and brain function, stress adaptation, and molecular pathways across rodents, monkeys, and humans.
What was found
The abstract reports no numerical values or effect estimates. Qualitatively, intermittent fasting and caloric restriction were reported to extend lifespan in animals, improve insulin sensitivity, reduce blood pressure, increase heart rate variability in rodents, and protect heart and brain cells against ischemic injury in experimental stroke and myocardial infarction models, with mechanisms involving reduced oxidative damage and BDNF signaling.
Why it matters
The paper outlines shared biological pathways between dietary restriction and physical exercise that may guide preventive strategies for cardiovascular and neurovascular disease.
Limits
The abstract describes a non-systematic narrative review that relies heavily on rodent and monkey models. It reports no quantitative data, sample sizes, or standardized search criteria, limiting direct clinical translation to humans.
Cited by
- supports Intermittent fasting enhances parasympathetic nervous system activity and vagal tone to the heart in a manner similar to aerobic exercise.