In male grey mouse lemurs, eating 30% fewer calories over a long period leads to fewer deaths from age-related diseases like cancer and kidney disease compared to lemurs that eat normally.
Mechanism
Synthesis from 1 study
Eating less food slows down the body's energy use, which cuts down on harmful chemicals and inflammation. This protects organs like the kidneys and stops abnormal cell growth, so fewer animals get cancer or kidney disease as they get older.
Most probable mechanism
Eating less food lowers the body's energy use, which reduces harmful byproducts from metabolism and decreases inflammation. This protects organs like the kidneys and prevents abnormal cell growth, so fewer animals develop cancer or kidney disease as they age.
Chronic 30% caloric restriction lowers systemic metabolic rate and reduces mitochondrial reactive oxygen species production
Reduced oxidative stress decreases DNA damage, protein oxidation, and lipid peroxidation in peripheral tissues
Lower oxidative burden suppresses chronic activation of pro-inflammatory signaling pathways, including NF-κB and cytokine production
Reduced inflammation and DNA damage inhibit abnormal cell proliferation and fibrotic remodeling in organs such as the kidney and liver
Suppressed tissue damage and cellular dysfunction decrease the incidence of neoplastic and degenerative pathologies, including cancer and chronic nephritis
Less supported by current evidence, but not ruled out
Reduced food intake causes certain brain areas to lose nerve cells faster, even as other parts of the brain stay structurally intact. This trade-off does not affect lifespan or disease resistance but alters brain structure.
Caloric restriction alters neurotrophic signaling and reduces nutrient availability to neurons in the hippocampus and entorhinal cortex
Neurons in these regions undergo atrophy, dendritic retraction, or reduced synaptic maintenance
Accelerated loss of grey matter volume occurs in cortical and limbic regions without affecting white matter integrity
Evidence from Studies
Supporting (1)
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Contradicting (0)
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