Calorie restriction (CR) and broader dietary restriction (DR) remain the most robust, evolutionarily conserved interventions for extending lifespan and healthspan across species. In rodents, CR can increase lifespan by up to 40%, while human data suggest only modest gains of a few years. The underlying mechanisms involve coordinated shifts in nutrient‑sensing pathways such as insulin/IGF‑1, mTOR, AMPK and NAD⁺‑dependent sirtuins, which drive enhanced autophagy, proteostasis, mitochondrial remodeling and immune modulation. Recent research also highlights amino‑acid sensing, FGF21 signaling, gut microbiome interactions and circadian regulation as additional layers influencing the response.
Researchers analyzed plasma‑derived extracellular vesicles (EVs) from a healthy aging cohort using size‑exclusion chromatography, surface profiling, nanoparticle tracking and small‑RNA sequencing. They observed age‑dependent shifts in EV surface markers—decreases in CD3, CD56, HLA‑A, CD45 and increases in CD14, CD69—signaling immunosenescence...
Researchers highlight that senescent cells arising from DNA replication errors that generate whole‑chromosome duplications—polyploidy‑induced senescence (PIS)—are biochemically distinct from senescence caused by other stresses. Existing literature often fails to separate polyploid senescent cells from diploid counterparts, obscuring their unique roles...
A new study shows that maternal obesity dramatically shortens the lifespan of mouse offspring, even when the pups are switched to a healthy diet after weaning. The reduction in longevity is linked to early‑life epigenetic programming that triggers widespread organ...
Stem cell therapies for neurodegenerative diseases span unregulated, low‑evidence clinics to proprietary, patent‑protected programs seeking regulatory approval. A new narrative review compiles trial outcomes, highlighting modest benefits—primarily brief inflammation reduction—and significant variability across patients and cell batches. The paper also...
The article argues that the brain is the rate‑limiting organ for longevity, asserting that neural network degradation drives functional decline across the body. While peripheral organ rejuvenation has advanced, preserving and repairing brain tissue remains the critical bottleneck. It proposes...
Researchers using Drosophila models demonstrated that proper distribution of mitochondria along axons is essential for neuronal autophagy and protein homeostasis. Depleting axonal mitochondria triggers protein accumulation, autophagic failure, and a shift in eIF2β expression that suppresses global translation. Overexpressing eIF2β...
A new open‑access study investigates how the aging oral microbiome influences senescent cells and their SASP secretions, proposing a systemic oral‑microbiome‑senescence axis. The authors outline evidence that dysbiotic oral communities can exacerbate chronic inflammation and accelerate age‑related pathologies, yet they...
Researchers discovered that age‑associated B cells (ABCs) actively impair immune function in older mice. Permanent genetic ablation of B cells reduced CD4 T‑cell aging, restored naive T‑cell pools, and prevented T‑cell receptor clonal restriction. The study identified B‑cell intrinsic insulin‑receptor...
Researchers identified oligodendrocyte myelin glycoprotein (OMG) in blood as a marker inversely associated with cortical amyloid‑β deposition and neurodegeneration. Large‑scale plasma proteomics across more than a dozen cohorts showed lower OMG levels in individuals with Alzheimer’s disease, other dementias, and...
Cytomegalovirus (CMV) infection, prevalent in most adults, increasingly appears linked to neurodegenerative processes. Large cohort studies show higher CMV IgG levels correlate with accelerated cognitive decline, and post‑mortem analyses detect CMV DNA in a majority of vascular dementia brains. Animal...
Researchers report that the FDA‑approved antiepileptic levetiracetam reduces amyloid‑β42 production in mouse models of Alzheimer’s disease. The drug redirects amyloid precursor protein processing toward the non‑amyloidogenic pathway by modifying synaptic vesicle cycling and increasing surface APP expression. Mass‑spectrometry and electrophysiology...
Researchers increasingly rely on rapid, toxic mouse models that sideline the natural aging process, even though age is the chief risk factor for many diseases. In Parkinson's disease research, most pre‑clinical studies still use young rodents, obscuring how biological aging...
A recent open‑access study of 514 Canadian seniors examined peripheral inflammation using IL‑6 and C‑reactive protein. The analysis revealed that elevated IL‑6 levels were present in 12% of cognitively normal participants but rose sharply to 36‑55% among Alzheimer’s, mixed dementia,...