Frontal contributions to cognitive decline in aging were explored using functional MRI. 3 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
27,380 Alzheimer's and dementia studies in plain English, each scored out of 100.
Frontal contributions to cognitive decline in aging were explored using functional MRI. 3 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
The prefrontal cortex (PFC) regulates emotional responses, but it is unclear how PFC integrates diverse inputs to select the appropriate response. 1 key finding →
Evidence: low
Full summary, score breakdown and related studies → Original source
The hippocampus is known to support recollection memory, but the relation between its structure and recollection in healthy adults has not been established. 3 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
Major depression (MD) is one of the most prevalent psychiatric disorders and a leading cause of loss in work productivity. 1 key finding →
Evidence: low
Full summary, score breakdown and related studies → Original source
A majority of current disease-modifying therapeutic approaches for age-related neurodegenerative diseases target their characteristic proteopathic lesions (α-synuclein, Tau, Aβ). 2 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
Presenilins play essential roles in memory formation, synaptic function, and neuronal survival. 1 key finding →
Evidence: low
Full summary, score breakdown and related studies → Original source
The blood-brain barrier (BBB) limits entry of blood-derived products, pathogens, and cells into the brain that is essential for normal neuronal functioning and information processing. 1 key finding →
Evidence: low
Full summary, score breakdown and related studies → Original source
Apolipoprotein E is associated with age-related risk for Alzheimer's disease and plays critical roles in Abeta homeostasis. 2 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
Among the three human apolipoprotein E (apoE) isoforms, apoE4 increases the risk of Alzheimer's disease (AD). 1 key finding →
Evidence: low
Full summary, score breakdown and related studies → Original source
Alzheimer's disease (AD) is a clinically heterogeneous neurodegenerative disease with a strong genetic component. 2 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
Neural network dysfunction may play an important role in Alzheimer's disease (AD). 1 key finding →
Evidence: low
Full summary, score breakdown and related studies → Original source
A large body of evidence has implicated Abeta peptides and other derivatives of the amyloid precursor protein (APP) as central to the pathogenesis of Alzheimer's disease (AD). 5 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
Mutations in the presenilin 1 (PS1) and presenilin 2 genes cosegregate with the majority of early-onset familial Alzheimer's disease (FAD) pedigrees. 1 key finding →
Evidence: low
Full summary, score breakdown and related studies → Original source
Beta amyloid (Abeta), a peptide generated from the amyloid precursor protein (APP) by neurons, is widely believed to underlie the pathophysiology of Alzheimer's disease. 1 key finding →
Evidence: low
Full summary, score breakdown and related studies → Original source
The majority of early-onset cases of familial Alzheimer's disease (FAD) are linked to mutations in two related genes, PS1 and PS2, located on chromosome 14 and 1, respectively. 1 key finding →
Evidence: low
Full summary, score breakdown and related studies → Original source
Gamma-Secretase cleaves the Amyloid Precursor Protein (APP) in its transmembrane domain, releasing the amyloid peptide Abeta. 1 key finding →
Evidence: low
Full summary, score breakdown and related studies → Original source
Mutations in presenilins are the major cause of familial Alzheimer's disease, but the pathogenic mechanism by which presenilin mutations cause memory loss and neurodegeneration remains unclear. 2 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
The beta-amyloid precursor protein (beta APP) is a membrane-spanning glycoprotein that is the source of the beta-amyloid peptide (beta AP) which accumulates as senile plaques in the brains of patients with Alzheimer's disease. beta APP is normally processed such that a cleavage occurs within the beta AP, liberating secreted forms of beta APP (APPss) from the cell. 5 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
Tau aggregation occurs in neurodegenerative diseases including Alzheimer's disease and many other disorders collectively termed tauopathies. trans-cellular propagation of tau pathology, mediated by extracellular tau aggregates, may underlie pathogenesis of these conditions. 1 key finding →
Evidence: low
Full summary, score breakdown and related studies → Original source
Sirtuins are nicotinamide adenine dinucleotide (NAD+)-dependent deacylases that have traditionally been linked with calorie restriction and aging in mammals. 5 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
In Alzheimer's disease (AD), the impairment of declarative memory coincides with the accumulation of extracellular amyloid-beta protein (Abeta) and intraneuronal tau aggregates. 2 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
Many excitatory synapses express Group 1, or Gq coupled, metabotropic glutamate receptors (Gp1 mGluRs) at the periphery of their postsynaptic density. 5 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
Part of the inflammatory response in Alzheimer's disease (AD) is the upregulation of the inducible nitric oxide synthase (NOS2) resulting in increased NO production. 1 key finding →
Evidence: low
Full summary, score breakdown and related studies → Original source
Learning and memory depend on dendritic spine actin assembly and docosahexaenoic acid (DHA), an essential n-3 (omega-3) polyunsaturated fatty acid (PFA). 3 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
The blood-brain barrier (BBB) is a highly specialized brain endothelial structure of the fully differentiated neurovascular system. 1 key finding →
Evidence: low
Full summary, score breakdown and related studies → Original source
Free full text links and the Full text may need a subscription label come from Unpaywall, Europe PMC and OpenAlex records of free copies, checked 10 Oct 2026. A study with neither is unknown, not paywalled. Show only studies that are free to read
This is alzhub's own score. It is not an official metric, not an impact factor, and no journal, publisher or ranking body endorses it. We built it so that a reader who is not a scientist can tell a landmark trial from a conference abstract without having to already know the difference. Every point comes from one of 20 components, all of them printed on the study itself, so you can disagree with our arithmetic rather than having to trust the total.
Journals are placed in ordered tiers, never given a numeric impact factor — we could not verify current impact factors from a source we control, and an invented one would be worse than none. Tier 1 is the top-tier general journals (NEJM, The Lancet, JAMA, Nature, Science, Nature Medicine); tier 2 is the leading specialty journals; tier 3 is every other peer-reviewed journal. A separate part scores how much the journal's own papers are cited, which tells the tier-3 journals apart.
Two rules we don't bend. First, we never fill in a missing value: if a record does not state a sample size or a design, that component scores zero, and if we simply have no data for a part, such as a citation count, that part is left out and the study is scored on the parts we could check. The study card says which. Second, anything that is not a peer-reviewed article is capped at 16/100 and carries a warning chip — so a conference abstract or a company press release can never outrank a peer-reviewed paper, no matter how good it looks.
We rank a rigorous null result — a good trial showing that something does not work — above an early positive finding. Someone deciding whether to buy a supplement is served by that, and the rigour is already counted by the design and journal components.
The score is computed from the published data alone and is reproducible: the same file always yields the same numbers.
See the whole rubric drawn out → — four charts covering all 27,380 studies: how the scores are spread and where the cap bites, which of the 20 components the library is strong and weak on, which subjects rest on stronger evidence, and what kinds of study each subject is actually built from.
This is a large sample of the Alzheimer's literature, not an exhaustive index of it. It holds 27,380 records, built mostly from automated pulls of Europe PMC (60.6% of the library) and OpenAlex (18.6%), plus smaller pulls from PubMed, Crossref and medRxiv. If a study, a drug, or a finding isn't here, that is not evidence it doesn't exist in the literature — it may simply not have been pulled in yet.
1,032 records (3.8% of the library) are not peer-reviewed — 962 of those are preprints posted before any journal review, and the rest are conference abstracts, regulatory notices and reports. Every study card on this page states its status plainly, and the score above is capped for anything that isn't a peer-reviewed article.
See the full, machine-readable breakdown of this library's coverage →