29,780 Alzheimer's and dementia studies in plain English, each scored out of 100.
RBC DHA was associated with a positive (improved) global cognition (PACC) rate of change (estimate: 0.011; 95% CI: 0.001, 0.021; P = 0.024). 5 key findings →
Design: longitudinal study Participants: 323 Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
Insulin resistance (IR) is the main pathological condition underlying vascular disorders, such as diabetes and cardiovascular disease, which are well established risk factors for cognitive decline and Alzheimer disease (AD). 3 key findings →
Design: longitudinal study Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
In their study, Chen et al 1 examined the association between apolipoprotein E (APOE) genotype and longitudinal cognitive trajectories among middle-aged and older East Asian adults participating in the Healthy Aging Longitudinal Study of Taiwan (HALST).Although sporadic late-onset Alzheimer disease (AD) is polygenic, APOE remains the strongest genetic determinant of AD risk, with carriers of the APOE ε4 allele having increased odds of developing AD dementia in a dose-dependent manner compared with APOE ε3 homozygotes. 1 key finding →
Design: longitudinal study Participants: 21 Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
We included 1179 CU subjects (n = 474 females (40%), 70.9 ± 4.5 years old) of European descent who had pTau217 and PACC. 5 key findings →
Design: longitudinal study Participants: 474 Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
274 participants [average age 75.9 (SD 5.8); 57% women; 13% self-identified as Black] were offered their research results and 40% declined. 5 key findings →
Design: longitudinal study Participants: 274 Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
The findings from the AHEAD Study screening process and longitudinal data from the LEARN Study are providing critical data to guide future prevention trial design. 5 key findings →
Design: longitudinal study Participants: 1,000 Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
Stroke interacts with APOE ε4 to influence dementia, with the association being more pronounced in APOE ε4 non‐carriers. 4 key findings →
Design: cohort study Participants: 336 Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
Higher AD-PRS was associated with faster CD in the full clinical cohort and in biomarker subset, independently of APOE genotype. 5 key findings →
Design: longitudinal study Participants: 7,233 Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
Thirty-two patients met inclusion criteria (lecanemab, N=15; donanemab, N=17). 5 key findings →
Design: longitudinal study Participants: 15 Evidence: moderate
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Transcranial direct current stimulation (tDCS) is a promising non-invasive intervention for mild cognitive impairment (MCI). 4 key findings →
Design: longitudinal study Participants: 55 Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
Although apolipoprotein E (ApoE) ε4 is a well-established risk factor for Alzheimer disease, its role in the development of post-stroke cognitive impairment (PSCI) remains uncertain. 4 key findings →
Design: cohort study Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
No significant associations were found between retinal thickness and AD risk (RNFL: odds ratio [OR]IVW = 1.001, 95% confidence interval [CI] = 0.986-1.017, P = 0.883; GCIPL: ORIVW = 1.008, 95% CI = 0.997-1.019, P = 0.172). 5 key findings →
Design: longitudinal study Participants: 31,434 Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
These findings highlight normative modelling's utility in revealing the complex interplay among sex, age, and AD risk in shaping brain structure and cognition in later life. 5 key findings →
Design: longitudinal study Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
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
Full summary, score breakdown and related studies → Original source Free full text
OASIS-3 is a compilation of MRI and PET imaging and related clinical data for 1098 participants who were collected across several ongoing studies in the Washington University Knight Alzheimer Disease Research Center over the course of 15 years. 4 key findings →
Design: longitudinal study Participants: 1,098 Evidence: moderate
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BackgroundUp to 30% of individuals harboring core Alzheimers disease (AD) neuropathology--amyloid-{beta} (A{beta};A) and tau (T)--remain cognitively unimpaired. 1 key finding →
Design: cohort study Participants: 500 Evidence: moderate
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BackgroundPhenotypic age acceleration (PhenoAgeAccel), derived from PhenoAge, and MetaboHealth are composite exposures of biological ageing and metabolic health associated with dementia-related outcomes. 4 key findings →
Design: longitudinal study Participants: 272 Evidence: moderate
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BACKGROUNDSubjective cognitive decline (SCD) may precede mild cognitive impairment (MCI), but not all individuals with SCD progress to MCI. 5 key findings →
Design: longitudinal study Participants: 1,352 Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
ObjectiveTo determine whether a multi-trait polygenic profile for dementia is associated with dementia- and disability-free survival in middle-aged and older adults. 5 key findings →
Design: longitudinal study Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
The full cohort included 1044 participants, of whom 779 comprised the proteomics cohort. 5 key findings →
Design: longitudinal study Participants: 674 Evidence: moderate
Full summary, score breakdown and related studies → Original source
Emerging evidence and expert opinion suggest that subcortical microhaemorrhages may be less closely related to cerebral amyloidosis than lobar lesions and may therefore warrant separate consideration in anti-amyloid treatment eligibility criteria. 5 key findings →
Design: longitudinal study Participants: 1,146 Evidence: moderate
Full summary, score breakdown and related studies → Original source
These findings support MRI-derived LC intensity as a marker of early AD-related processes and suggest that LC intensity may provide complementary information not captured by plasma pTau 217 alone. 4 key findings →
Design: longitudinal study Participants: 163 Evidence: moderate
Full summary, score breakdown and related studies → Original source
Chronic pain and cognitive impairment are rising ageing-related burdens. 4 key findings →
Design: longitudinal study Participants: 387,649 Evidence: moderate
Full summary, score breakdown and related studies → Original source
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 29,780 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 29,780 records, built mostly from automated pulls of Europe PMC (63.8% of the library) and OpenAlex (17.1%), 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 →