Late-onset Alzheimer's disease (LOAD) is the most common form of dementia in the elderly. 4 key findings →
Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
27,780 Alzheimer's and dementia studies in plain English, each scored out of 100.
Late-onset Alzheimer's disease (LOAD) is the most common form of dementia in the elderly. 4 key findings →
Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
Although it is clear that apoE plays an important role in the genetics of late-onset Alzheimer disease (AD), evidence exists that additional genes may play a role in AD, and estimates of the total contribution of apoE to the variance in onset of AD vary widely. 2 key findings →
Participants: 742 Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
This comprehensive population genetic study in control subjects fills the void for a PARK2 reference dataset. 3 key findings →
Participants: 1,686 Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Additional (not mutually exclusive) explanations for findings are discussed. 1 key finding →
Participants: 255 Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Frontotemporal dementia with parkinsonism, chromosome 17 type (FTDP-17) is caused by mutations in the tau gene, and the signature lesions of FTDP-17 are filamentous tau inclusions. 5 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Pallido-ponto-nigral degeneration (PPND) is one of the most well characterized familial neurodegenerative disorders linked to chromosome 17q21-22. 5 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
The association of testosterone concentrations with dementia risk remains uncertain. 4 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Full text may need a subscription
Although exact causes of Parkinson disease (PD) remain enigmatic, mitochondrial dysfunction is increasingly appreciated as a key determinant of dopaminergic neuron susceptibility in both familial and sporadic PD. 3 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
All original research articles published in 2008 and 2009 in the Journal of the American Geriatrics Society (n = 434) were reviewed using a structured data collection tool. 4 key findings →
Participants: 434 Evidence: low
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Missing data is a common complication in data analysis. 4 key findings →
Evidence: low
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The relationship between PP and CSF biomarkers is age-dependent and observed only in participants in the fifth and sixth decades of life. 1 key finding →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
These CSF A beta 42 findings are consistent with acceleration by the APOE*4 allele of pathogenic A beta 42 brain deposition starting in later middle age in persons with normal cognition. 2 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Full text may need a subscription
APOE alleles ε2, ε3, and ε4 account for essentially all the inherited risk of AD associated with this region. 3 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Biomarkers to assist in the diagnosis and medical management of Alzheimer disease (AD) are a pressing need. 4 key findings →
Evidence: low
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Alzheimer disease is the most common cause of dementia and represents a major public health problem. 4 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Phosphorylation of tau protein is a critical event in the pathogenesis of Alzheimer's disease (AD). 4 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Postmortem demonstration of increased expression of biologically active S100B in Alzheimer's disease (AD) and its relation to progression of neuropathological changes across the cortical regions suggests involvement of this astrocytic cytokine in the pathophysiology of AD. 4 key findings →
Evidence: low
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The epsilon(4) allele of APOE confers a two- to fourfold increased risk for late-onset Alzheimer's disease (LOAD), but LOAD pathology does not all fit neatly around APOE. 3 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
TDP-linked proteinopathies, including amyotrophic lateral sclerosis (ALS), frontotemporal dementia (FTD) and limbic-predominant age-related TDP-43 encephalopathy (LATE), are characterised by pathogenic deposits containing transactive response DNA-binding protein 43 (TDP-43) in the brain and spinal cord of patients. 1 key finding →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Dementia with Lewy bodies (DLB), a progressive neurodegenerative disease with heterogeneous clinical presentations, greatly impacts patients, caregivers, and society. 5 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Cognitive impairment (CI) is a common nonmotor complication of Parkinson's disease (PD), and is associated with significant disability for patients and burden for caregivers. 1 key finding →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Tauopathies are neurodegenerative diseases characterized by the accumulation of misfolded tau protein and include Alzheimer's disease (AD) and related dementia disorders. 5 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
BackgroundAlzheimers disease (AD) is characterized by amyloid beta and tau accumulation accompanied by altered inflammatory responses. 4 key findings →
Design: cross-sectional Participants: 261 Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
Service members with traumatic brain injury are at approximately two- to four-fold higher risk of Alzheimers disease or related dementias than those without such an injury, with risk increasing with injury severity. 5 key findings →
Participants: 57 Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
ObjectiveEffective strategies to prevent Alzheimers disease and related dementias (ADRD) are limited. 5 key findings →
Participants: 9,584 Evidence: moderate
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 27,780 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 27,780 records, built mostly from automated pulls of Europe PMC (61.1% of the library) and OpenAlex (18.3%), 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.
1,034 records (3.7% 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 →