Prior to any evaluation of morphologic brain changes, a decision must be made whether a given alteration is associated with aging or with disease. 1 key finding →
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.
Prior to any evaluation of morphologic brain changes, a decision must be made whether a given alteration is associated with aging or with disease. 1 key finding →
Evidence: low
Full summary, score breakdown and related studies → Original source
Nicotine is a very widely used drug of abuse, which exerts a number of neurovegetative, behavioural and psychological effects by interacting with neuronal nicotinic acetylcholine receptors (NAChRs). 5 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
Mutations in two related genes, presenilin 1 and 2, account for most early-onset familial Alzheimer's disease. 2 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
These findings suggest a disease stage dependent general activation of the immune system both in sporadic AD and in DS with AD. 3 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
We tested the hypothesis that synaptic defects in the hippocampus of individuals with Alzheimer disease (AD) correlate with the severity of cognitive impairment. 2 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
Deposits of amyloid beta-peptide (A beta), reduced glucose uptake into brain cells, oxidative damage to cellular proteins and lipids, and excitotoxic mechanisms have all been suggested to play roles in the neurodegenerative process in Alzheimer's disease. 5 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
The transcription factor NF-kappaB is expressed in neurons wherein it is activated in response to a variety of stress- and injury-related stimuli including exposure to cytokines such as tumor necrosis factor-alpha (TNFalpha), and excitotoxic and oxidative insults. 1 key finding →
Evidence: low
Full summary, score breakdown and related studies → Original source
Cerebral amyloid angiopathy (CAA) is caused by the cerebrovascular deposition of Alzheimer amyloid beta protein (Abeta) and shows an increased incidence in carriers of the apolipoprotein E (APOE) epsilon4 genotype. 1 key finding →
Evidence: low
Full summary, score breakdown and related studies → Original source Full text may need a subscription
Two suggested clinical trial designs for assessing progression of Alzheimer disease are the randomized withdrawal design and the randomized start design. 3 key findings →
Evidence: high
Full summary, score breakdown and related studies → Original source Full text may need a subscription
Growth inhibitory factor, a new metallothioneinlike protein, was investigated at postmortem examination in the brains of 18 patients with Down syndrome ranging in age from 18 weeks gestation to 50 years of age and in 20 age-matched normal controls by developmental immunohistochemistry. 5 key findings →
Participants: 18 Evidence: low
Full summary, score breakdown and related studies → Original source Full text may need a subscription
The evidence to support a claim that a new drug will slow the progression of Alzheimer disease (AD) must derive from epistemologically valid research methods. 5 key findings →
Evidence: high
Full summary, score breakdown and related studies → Original source Full text may need a subscription
Monoclonal antibodies (mAbs) D3G6 and C8A5, specific for amino acid residues 160-168 of S182 protein, immunolabeled neurons, ependymal and choroid plexus cells, and myocytes in brain sections from normal subjects and people with Alzheimer disease or Down syndrome and in rats and mice. 3 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Full text may need a subscription
Alzheimer type II astrocytosis is the pathological hallmark of hepatic encephalopathy. 3 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Full text may need a subscription
Down syndrome, trisomy of chromosome 21, is well investigated because it is a genetic disease with characteristic mental retardation and precocious dementia of Alzheimer type. 4 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Full text may need a subscription
Manganese-superoxide dismutase (Mn-SOD) was localized in the cerebral cortex and hippocampus of patients with Alzheimer-type senile dementia (ATD) by immunocytochemistry and the relationship of Mn-SOD with two major pathological features of ATD, i.e., senile plaques and neurofibrillar tangles (NFTs), was examined. 2 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Full text may need a subscription
Some individuals with Down syndrome develop an Alzheimer-type dementia in the third and fourth decades of life. 2 key findings →
Participants: 21 Evidence: low
Full summary, score breakdown and related studies → Original source Full text may need a subscription
Mounting evidence suggests that defects in energy metabolism contribute to the pathogenesis of Alzheimer disease (AD). 4 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Information technology is bringing fundamental changes to many U.S. industries. 5 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
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 →