Alzheimer's disease (AD) affects approximately 35 million people worldwide. 2 key findings →
Design: cohort study Evidence: moderate
Full summary, score breakdown and related studies → Original source
27,380 Alzheimer's and dementia studies in plain English, each scored out of 100.
Alzheimer's disease (AD) affects approximately 35 million people worldwide. 2 key findings →
Design: cohort study Evidence: moderate
Full summary, score breakdown and related studies → Original source
Between January 2006 and December 2010, 20,729 patients aged >70 years received a prescription for an AD medication. 5 key findings →
Participants: 20,729 Evidence: low
Full summary, score breakdown and related studies → Original source
Of 353 people admitted during the enrolment period, 174 (49%) took part in the survey. 5 key findings →
Design: cross-sectional Participants: 97 Evidence: low
Full summary, score breakdown and related studies → Original source
Ventricular volume trajectory is more sensitive than total brain and hippocampal volume trajectories as a marker of accruing Alzheimer disease and vascular pathology in elderly individuals. 4 key findings →
Design: longitudinal study Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
Dementia and gait impairments often coexist in older adults and patients with neurodegenerative disease. 1 key finding →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Executive function was associated with falls and gait speed slowing in older adults. 4 key findings →
Evidence: low
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Dementia is increasingly being recognized in cases of Parkinson's disease (PD); such cases are termed PD dementia (PDD). 4 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Worldwide costs of dementia are enormous and distributed inequitably. 1 key finding →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
This study does not support a protective effect of bilingualism on age-related cognitive decline or the development of dementia. 4 key findings →
Participants: 1,067 Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
The area under the time-dependent ROC curve (AUC) may be used to quantify the ability of a marker to predict the onset of a clinical outcome in the future. 5 key findings →
Evidence: moderate
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Disorders characterized by α-synuclein (α-syn) accumulation, Lewy body formation and parkinsonism (and in some cases dementia) are collectively known as Lewy body diseases. 4 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Massive GGGGCC repeat expansion in the first intron of the gene C9orf72 is the most common known cause of familial frontotemporal lobar degeneration (FTLD) and amyotrophic lateral sclerosis (ALS). 1 key finding →
Evidence: low
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Alzheimer's Disease (AD) currently affects more than 5 million Americans, with numbers expected to grow dramatically as the population ages. 4 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Significant progress has been made uncovering functional brain networks, yet little is known about the corresponding structural covariance networks. 3 key findings →
Design: cross-sectional Participants: 414 Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
The 3D GRASE pCASL offers better repeatability than 2D EPI pCASL, thereby may provide a reliable imaging marker for the evaluation of disease progression and treatment effects in MCI and early AD subjects. 3 key findings →
Design: longitudinal study Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
Using quantitative polymerase chain reaction techniques, we measured circulating cell-free mitochondrial DNA (mtDNA) in cerebrospinal fluid (CSF) from study participants, selected from a cohort of 282 subjects, who were classified according to their concentrations of amyloid β1-42, total tau, and phosphorylated tau and by the presence or absence of dementia, into asymptomatic subjects at risk of AD, symptomatic patients diagnosed with sporadic AD, presymptomatic subjects carrying pathogenic PSEN1 mutations, and patients diagnosed with frontotemporal lobar degeneration (FTLD). 4 key findings →
Participants: 282 Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
Phagocytosis controls CNS homeostasis by facilitating the removal of unwanted cellular debris. 4 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Cross-sectional observational study. 4 key findings →
Design: cross-sectional Participants: 75 Evidence: low
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Hexanucleotide repeat expansion in C9ORF72 is the most common genetic cause of frontotemporal dementia and motor neuron disease. 4 key findings →
Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
The HCRU and costs were greater for AD members during the year prior to diagnosis and during postdiagnosis years 1 and 2 compared to controls. 3 key findings →
Design: retrospective cohort Participants: 3,374 Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
Our data support the hypothesis that the pathogenesis of CAA-ri may be mediated by a selective autoimmune reaction against cerebrovascular Aβ, directly related to autoantibody concentration and soluble Aβ. 1 key finding →
Design: case-control study Evidence: moderate
Full summary, score breakdown and related studies → Original source
These data confirm that NPS are risk factors for conversion from CIND to dementia. 1 key finding →
Participants: 230 Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Two recent studies have reported the association of rs75932628-T in the TREM2 gene with the risk for Alzheimer's disease (AD). 1 key finding →
Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
For follow-up intervals of 2-4 years, the FCSRT-FR is more predictive than the LM-IR for identifying individuals with memory complaints who will develop incident AD. 1 key finding →
Participants: 86 Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
The results of this study provide objective validation of the ACE-III as a screening tool for cognitive deficits in FTD and AD. 2 key findings →
Participants: 33 Evidence: low
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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 →