27,380 Alzheimer's and dementia studies in plain English, each scored out of 100.
The Mini-Mental State Examination (MMSE) is the best-known and the most often used short screening tool for providing an overall measure of cognitive impairment in clinical, research and community settings. 4 key findings →
Design: longitudinal study Evidence: moderate
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The Mini-Mental State Examination (MMSE) is the best-known and the most often used short screening tool for providing an overall measure of cognitive impairment in clinical, research and community settings. 4 key findings →
Design: longitudinal study Evidence: moderate
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Higher adherence to the MedDiet was associated with greater gut microbial diversity (p < 0.05) and distinct microbial composition (PERMANOVA, p = 0.001). 5 key findings →
Design: longitudinal study Participants: 746 Evidence: moderate
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A total of 450 111 participants were included in the study (mean [SD] age, 51.1 [9.8] years; 70.8% women) and followed up during a median (IQR) time of 14.9 (4.1) years. 5 key findings →
Design: cohort study Participants: 111 Evidence: moderate
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The 6-year absolute risk was 12.0% (95% CI, 11.9% to 12.1%) in the control group (349 cases) and 9.5% (CI, 9.4% to 9.5%) in the intervention group (280 cases). 5 key findings →
Participants: 4,746 Evidence: high
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In this large cohort of older adults, long-term PM2.5 exposure was associated with increased dementia incidence. 3 key findings →
Participants: 541 Evidence: moderate
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This study aimed to investigate the associations of grip strength with incidence and mortality from dementia and whether these associations differ by sociodemographic and lifestyle factors. 4 key findings →
Participants: 788 Evidence: low
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We included 394,255 individuals including 184 incident cases of CD and 459 of UC after median follow-up of 13.6 years (4,889,910 person-years). 5 key findings →
Participants: 394,255 Evidence: moderate
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Diet can impact cognitive aging, but comprehensive data from human studies is lacking and the underlying biological mechanisms are still not fully understood. 4 key findings →
Design: cross-sectional Participants: 1,907 Evidence: low
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Cardiovascular disease (CVD) is the leading cause of mortality globally, with over 20 million deaths each year. 1 key finding →
Evidence: low
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The prevalence of dementia was low, despite a high prevalence of aMCI and CIND. 4 key findings →
Design: cross-sectional Participants: 1,074 Evidence: low
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We recruited 1501 participants (304 with FTLD, 512 with AD, and 685 healthy controls) from the Multi-Partner Consortium to Expand Dementia Research in Latin America (ReDLat). 5 key findings →
Participants: 1,501 Evidence: low
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Cognitively normal participants (mean age 57.6 years) from the Gipuzkoa Alzheimer Project study were classified as having high risk (HR; n = 82) or low risk (LR; n = 293) for dementia according to a CAIDE score cutoff of 9. 4 key findings →
Participants: 82 Evidence: low
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A total of 30 variants were overrepresented in four pathways: presenilin/Alzheimer disease, cadherin/WNT signaling, gonadotropin-releasing hormone receptor, and transforming growth factor-β (TGF-β) signaling. 5 key findings →
Participants: 204 Evidence: low
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A total of 9,656 (13.5%) participants had at least 1 CMD at baseline. 5 key findings →
Participants: 71,648 Evidence: low
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The prevention of Alzheimer's disease (AD) has become a real challenge due to its rising prevalence and the lack of an effective cure. 3 key findings →
Evidence: high
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Pancreatic cancer (PC), particularly pancreatic ductal adenocarcinoma (PDAC), is a significant global health issue with high mortality rates. 5 key findings →
Evidence: low
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There is little direct evidence that underground railway particulate matter exposure is more harmful than ambient particulate matter exposure. 5 key findings →
Evidence: low
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Higher total meat consumption (red meat: 51%, poultry: 20%, processed meat: 29%), was associated with a better cognitive trajectory only in the APOE34/44 stratum (β per 1 z-unit increase: 0.011; CI: 0.004 to 0.018 versus -0.003; CI: -0.008 to 0.003; P for interaction = 0.002). 5 key findings →
Design: longitudinal study Evidence: moderate
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Attention deficit is one of the core symptoms of the attention-deficit/hyperactivity disorder (ADHD). 5 key findings →
Evidence: low
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The geographical distribution of mortality has frequently been studied. 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. 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 →