Figure 1
Figure 1From Alzheimer's Research & Therapy · CC BY-NC-ND
Brain agingHumans

Education links to better cognition independent of brain pathology

Across two aging cohorts spanning normal cognition to mild Alzheimer’s disease, higher education tracked with better cognitive performance even after adjusting for multimodal brain pathology.

Alzheimer's Research & Therapy

In human participants spanning normal cognition to mild Alzheimer’s disease, researchers analyzed data from the PREVENT-AD and CIMA-Q cohorts to evaluate education as a proxy for cognitive reserve. They tested whether education and a multidimensional questionnaire related to cognitive outcomes before and after controlling for brain pathology, including white matter hyperintensity volume, neurodegeneration measures, and plasma Alzheimer’s biomarkers.

Higher education was consistently associated with better cognitive performance across cohorts. These associations persisted after adjusting for cerebrovascular, neurodegenerative, and Alzheimer’s disease pathology markers. However, education had limited associations with pathology burden itself and did not significantly moderate the link between pathology and cognition. Longitudinally, education related more consistently to baseline cognitive performance than to rates of cognitive change over time.

Why it matters

The findings clarify how cognitive reserve operates during brain aging, suggesting education supports cognitive performance through mechanisms that do not simply reduce or buffer against measurable neuropathology.

Caveats

The study relied on observational cohort data, and education failed to significantly moderate the relationship between pathology and cognition or consistently predict long-term cognitive trajectories.

The paper

Education, cognitive reserve and brain pathology in aging and Alzheimer’s disease: evidence from preclinical and symptomatic cohorts

Raeesi S, Metz A, Chadwick K et al.

Alzheimer's Research & Therapy · 2 Oct 2026

doi.org/10.1186/s13195-026-02192-4

More on Brain aging

See all
bioRxivHumansPreprint

Human neurons accumulate far more mutations over lifespan than shorter-lived mammals

Cortical neurons gain mutations at similar yearly rates across six species, leaving aged humans with uniquely high mutational burdens and…Cortical neurons gain mutations at similar yearly rates across six species, leaving aged humans with uniquely high mutational burdens and transcriptomic dysregulation. In a preprint analyzing humans, chimpanzees, rhesus macaques, marmosets, ferrets, and mice, researchers evaluated genomic…

Distinct cerebral cortical neuronal subtypes display subtle yet specific differences in their mutational landscape.
bioRxivAnimalsPreprint

CAR T cells targeting inflammatory bone marrow progenitors restore cognition in aged mice

Clearing these peripheral myeloid cells remodeled brain macrophages and improved cognitive performance without requiring the engineered immune cells…Clearing these peripheral myeloid cells remodeled brain macrophages and improved cognitive performance without requiring the engineered immune cells to enter the brain. In aged mice and mouse models of Alzheimer's disease, researchers tested CAR T cell therapies targeting inflammatory…

bioRxivAnimalsPreprint

Extracellular cGAMP drives neuroinflammation and premature aging phenotypes in mice

Loss of the cGAMP-degrading enzyme ENPP1 allows microglia-derived signaling molecules to trigger STING-dependent inflammation across multiple brain…Loss of the cGAMP-degrading enzyme ENPP1 allows microglia-derived signaling molecules to trigger STING-dependent inflammation across multiple brain cell types. In a mouse study, researchers found that advanced age and experimental autoimmune encephalomyelitis cause microglia to accumulate…

bioRxivCellsPreprint

Directly converted human neuronal spheroids preserve donor age and model Alzheimer disease

The three-dimensional cell platform maintains biological aging markers while spontaneously developing hallmark pathologies of sporadic Alzheimer…The three-dimensional cell platform maintains biological aging markers while spontaneously developing hallmark pathologies of sporadic Alzheimer disease. In a new preprint, researchers developed directly induced neuronal spheroids using primary fibroblasts from young, unimpaired aged, and…

medRxivHumansPreprint

Auditory nerve myelin degeneration defines a subtype of age-related hearing loss

Researchers linked poor auditory nerve synchrony and myelin degradation to amplified communication difficulties in older humans, beyond standard…Researchers linked poor auditory nerve synchrony and myelin degradation to amplified communication difficulties in older humans, beyond standard hearing thresholds. In a human study detailed in a preprint, researchers investigated how auditory nerve changes affect hearing in older adults.

Aging modifies the association between auditory nerve response amplitude and neural synchrony.