29,380 Alzheimer's and dementia studies in plain English, each scored out of 100.
Among cognitively unimpaired participants with a family history of dementia, changes in cognition and brain MRI outcomes from baseline to year 3 did not differ significantly between those who followed the MIND diet and those who followed the control diet with mild caloric restriction. 5 key findings →
Design: RCT Participants: 604 Evidence: null result
Full summary, score breakdown and related studies → Original source Free full text
Good sleep is essential for health, yet associations between sleep and dementia risk remain incompletely understood. 4 key findings →
Design: meta-analysis Participants: 5,946 Evidence: high
Full summary, score breakdown and related studies → Original source Free full text
In this exploratory analysis, the APOE ε3[R145C] missense variant was associated with an increased risk of AD among individuals of African ancestry with the ε3/ε4 genotype. 5 key findings →
Design: case-control Participants: 31,929 Evidence: moderate
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Circulating NfL and GFAP may, independently and jointly, provide useful clinical insight regarding dementia risk and prognosis. 4 key findings →
Design: cohort Participants: 1,712 Evidence: moderate
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Goals-of-care documentation during the intervention phase occurred among 3744 of 6023 patients (62.2%) compared with 2396 of 4779 patients (50.1%) in the usual care phase (P Conclusions and relevance In this stepped-wedge cluster randomized clinical trial of older adults, a GOC video intervention delivered by PCEs resulted in higher rates of GOC documentation compared with usual care, including among Black or African American individuals, Hispanic or Latino individuals, non-English speakers, and people living with Alzheimer disease and related dementias. 3 key findings →
Participants: 802 Evidence: high
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The average life expectancy has increased substantially in the past few decades in most industrialized countries; however, not all of the increased life expectancy is being spent in optimal health, especially among individuals with low socioeconomic status. 4 key findings →
Design: cohort study Participants: 135 Evidence: moderate
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From the 868 Framingham Heart Study participants who returned for a second PSG, this cohort included 346 participants with a mean age of 69 years (range, 60-87 years); 179 (52%) were female. 4 key findings →
Design: cohort Participants: 346 Evidence: early
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Data from 3960 MRI sessions among 1141 participants were included: 252 pathogenic variant carriers from DIAN (mean [SD] age, 38.4 [11.2] years; 137 [54%] female), 571 older adults from ADNI (mean [SD] age, 72.8 [7.3] years; 274 [48%] female), and 318 older adults from HABS (mean [SD] age, 72.4 [7.6] years; 194 [61%] female). 3 key findings →
Design: cohort study Participants: 1,141 Evidence: moderate
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Differential eligibility may contribute to underrepresentation of some minoritized racial and ethnic groups in early AD trials. 2 key findings →
Participants: 156 Evidence: high
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In this study, females exhibited higher tau compared with age-matched males, particularly in the setting of elevated Aβ. 5 key findings →
Design: cross-sectional Evidence: low
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Global PET amyloid burden was compared with regards to cognitive status, APOE ɛ4 status, sex, age, and estimated years to symptom onset. 2 key findings →
Design: cross-sectional Participants: 216 Evidence: low
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We characterized the world's second case with ascertained extreme resilience to autosomal dominant Alzheimer's disease (ADAD). 5 key findings →
Evidence: preliminary
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The study included 234 patients (mean 71 years, 42% female). 5 key findings →
Design: longitudinal study Participants: 234 Evidence: moderate
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Amyloid PET imaging has been crucial for detecting the accumulation of amyloid beta (Aβ) deposits in the brain and to study Alzheimer's disease (AD). 4 key findings →
Participants: 13,409 Evidence: low
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Delirium is a complex neurocognitive syndrome suspected to be bidirectionally linked to dementia. 4 key findings →
Participants: 551 Evidence: low
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Natural killer (NK) cells are commonly reduced in human tumors, enabling many to evade surveillance. 4 key findings →
Evidence: low
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The 21-point Brain Care Score (BCS) was developed through a modified Delphi process in partnership with practitioners and patients to promote behavior changes and lifestyle choices in order to sustainably reduce the risk of dementia and stroke. 4 key findings →
Evidence: low
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This review provides a comprehensive state-of-the-art conceptual review of radiological features, clinical detection and classification challenges, pathophysiology, underlying biological mechanism(s) and risk factors/predictors associated with ARIA. 2 key findings →
Evidence: high
Full summary, score breakdown and related studies → Original source
Although pathogenic variants in PSEN1 leading to autosomal-dominant Alzheimer disease (ADAD) are highly penetrant, substantial interindividual variability in the rates of cognitive decline and biomarker change are observed in ADAD. 3 key findings →
Design: cross-sectional Evidence: moderate
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Relationships between CSF biomarkers but not imaging biomarkers varied by racialized groups. 1 key finding →
Evidence: low
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Structured Abstract Introduction People with Down syndrome (DS) often develop Alzheimer disease (AD). 4 key findings →
Design: cross-sectional Participants: 85 Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
Recent genetic studies on Alzheimer's disease (AD) have brought microglia under the spotlight, as loci associated with AD risk are enriched in genes expressed in microglia. 4 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
This cross-sectional study examines the characteristics of prior authorization policies for new drugs in Medicare Part D to understand whether they are consistent with US Food and Drug Administration indications. 1 key finding →
Design: cross-sectional 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 29,380 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 29,380 records, built mostly from automated pulls of Europe PMC (63.3% of the library) and OpenAlex (17.3%), 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.
1,037 records (3.5% of the library) are not peer-reviewed — 964 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 →