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
27,380 Alzheimer's and dementia studies in plain English, each scored out of 100.
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
TAR DNA-binding protein 43 (TDP-43) inclusions are a pathological hallmark of frontotemporal dementia (FTD) and amyotrophic lateral sclerosis (ALS), including cases caused by G 4 C 2 repeat expansions in the C9orf72 gene (c9FTD/ALS). 3 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Uptake of carbon 11-labeled Pittsburgh Compound B ([(11)C]PiB) was measured for participants assessed between August 15, 2003, and January 8, 2008, at the Washington University Alzheimer's Disease Research Center and diagnosed either as nondemented (n = 161) or with dementia of the Alzheimer type (n = 37). 1 key finding →
Participants: 161 Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Apolipoprotein E ( APOE ) ε4 genotype is associated with increased risk of dementia in Parkinson's disease (PD), but the mechanism is not clear, because patients often have a mixture of α-synuclein (αSyn), amyloid-β (Aβ), and tau pathologies. 5 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
The most frequent NPS were depression (in 66% of the sample), anxiety (65%) and mental fatigue (57%). 3 key findings →
Participants: 94 Evidence: low
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The role of NPT has been largely explored in AD and dementia. 5 key findings →
Evidence: high
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Caregiver characteristics and provision of caregiving tasks determine caregiver burden more than care recipient characteristics. 5 key findings →
Evidence: low
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There is accumulating evidence that chronic dementia caregiver stress increases their vulnerability to disease and diminishes their ability to provide optimal care. 2 key findings →
Participants: 4,145 Evidence: low
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Frontotemporal dementia (FTD) is a clinical syndrome with a heterogeneous molecular basis. 1 key finding →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Significant research gaps remain. 4 key findings →
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
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Goal 1 of the National Plan to Address Alzheimer's Disease is to prevent and effectively treat Alzheimer disease and Alzheimer disease-related dementias by 2025. 3 key findings →
Evidence: low
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The National Alzheimer's Project Act, signed into law in 2011, mandates a National Plan to Address Alzheimer's Disease that is updated annually. 5 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Our nation is becoming increasingly diverse; however, few autopsy studies examine multiple ethnoracial groups, especially Hispanics. 4 key findings →
Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
These results highlight the need to increase the overall detection rates of MCI and of dementia particularly in socioeconomically disadvantaged groups. 4 key findings →
Evidence: low
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Geriatric depression is prevalent in rural south India. 5 key findings →
Participants: 1,000 Evidence: low
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AD is a public health epidemic, which seriously impacts cognition, mood and daily activities; however, one type of activity, exercise, has been shown to alter these states. 3 key findings →
Participants: 104 Evidence: low
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Among type 2 diabetic patients followed for 10 years, African Americans and Native Americans had a 40-60% greater risk of dementia compared with Asians, and risk was intermediate for non-Hispanic whites and Latinos. 3 key findings →
Evidence: low
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Higher arterial stiffness and pulsatility were associated with MCI and dementia in white participants. 3 key findings →
Design: cross-sectional Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
Higher prevalence of SCD in SGM adults highlights the importance of ensuring inclusive screenings, interventions, care services, and resources for SGM adults. 1 key finding →
Evidence: low
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Unesterified cholesterol is an essential structural component of the plasma membrane of every cell. 5 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
The global prevalence of dementia has been estimated to be as high as 24 million, and is predicted to double every 20 years until at least 2040. 1 key finding →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Every year an estimated 42 million people worldwide suffer a mild traumatic brain injury (MTBI) or concussion. 1 key finding →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
During the study period, the risk of mortality in hip fracture patients was 3-fold higher than that in the general population and included every major cause of death. 2 key findings →
Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
The prevalence of dementia varies substantially worldwide. 2 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.
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 →