30,580 Alzheimer's and dementia studies in plain English, each scored out of 100.
Baseline cognition was poorer in individuals born and residing in the South, particularly those attending desegregated schools at age 12. 4 key findings →
Design: longitudinal study Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
Our findings suggest that poor chewing ability is associated with cognitive impairment or dementia in the elderly living in rural area. 4 key findings →
Design: cross-sectional Participants: 295 Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
The prevalence of dementia in Latin America and the Caribbean is growing rapidly, increasing the burden placed on caregivers. 5 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
AD is a neurodegenerative disease, and its frequency is often reported to be higher for women than men: almost two-thirds of patients with AD are women. 4 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
The primary cohort included 91 AAs and 868 NHWs. 4 key findings →
Participants: 91 Evidence: moderate
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There is a growing recognition of sex differences in Alzheimer's disease (AD). 4 key findings →
Participants: 304 Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
The study sample included 21 193 170 patients with 32 199 587 beneficiary-year observations (mean [SD] age, 75.5 [7.3] years; 18 936 697 [58.8%] female; 983 513 [3.1%] Asian or Pacific Islander, 3 190 515 [9.9%] Black, 2 710 930 [8.4%] Hispanic, and 25 314 629 [78.6%] White). 5 key findings →
Design: cross-sectional Participants: 21 Evidence: low
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A significant reduction in underdiagnosis of dementia was observed between the two periods, consistent across most countries. 4 key findings →
Participants: 10,402 Evidence: low
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Index participants averaged 71.9 years, with > 50% lacking formal education. 5 key findings →
Design: longitudinal study Participants: 1,309 Evidence: moderate
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One-third of adults with neurological conditions in China have low health literacy, with pronounced socioeconomic and geographic disparities. 4 key findings →
Design: cross-sectional Participants: 1,120 Evidence: low
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Linear and logistic regression showed that childhood rural residence was associated with lower memory (standardized beta (β) = -1.68, 95% Confidence Interval (CI) [-2.39, -0.97]), executive function (β = -1.20, 95% CI [-1.84, -0.55]), and language fluency (β = -0.86, 95% CI [-1.64, -0.08]). 5 key findings →
Participants: 3,073 Evidence: low
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In total, 156 individuals were assessed for eligibility, and 79 (51%) were recruited (mean age 61.6 ± 6.9 (range 60-75) years; 68% male). 5 key findings →
Participants: 156 Evidence: high
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A total of 2,642 participants with a mean age of 64.3 years (95% CI 63.4-65.1, 44% male) were included. 5 key findings →
Participants: 2,642 Evidence: low
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The incidence rate for AD was significantly higher among African-American and Caribbean Hispanic elderly individuals compared white individuals.
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Reported rates of dementia differ by race, although most studies have not focused on carefully measured outcomes, confounding by education or other demographic factors, nor have they studied other outcomes other than dementia. 1 key finding →
Participants: 15,792 Evidence: moderate
Full summary, score breakdown and related studies → Original source
Markers of lower socioeconomic status predict risk of developing incident AD. 2 key findings →
Design: cohort study Evidence: moderate
Full summary, score breakdown and related studies → Original source
Having an exam reflects multiple factors. 1 key finding →
Design: longitudinal study Evidence: moderate
Full summary, score breakdown and related studies → Original source
Two ABCA7 missense variants (rs3764647 and rs3752239) demonstrated significant association with AD risk. 4 key findings →
Participants: 319 Evidence: moderate
Full summary, score breakdown and related studies → Original source
Compared to APOE ε4 non-carriers, APOE ε4 carriers had lower rsFC in temporal DMN, but only in non-Hispanic Whites. 3 key findings →
Participants: 166 Evidence: low
Full summary, score breakdown and related studies → Original source
Black and Hispanic older adults have significantly lower rates of ACP relative to Whites. 5 key findings →
Participants: 8,912 Evidence: low
Full summary, score breakdown and related studies → Original source
Higher NIH Toolbox Friendship scores predicted less episodic memory decline. 5 key findings →
Design: cross-sectional Evidence: moderate
Full summary, score breakdown and related studies → Original source
When considering race/ethnicity, the presence of more vascular comorbidities drove greater vulnerability. 4 key findings →
Design: cross-sectional Evidence: moderate
Full summary, score breakdown and related studies → Original source
Plasma AD biomarkers vary significantly in association with common medical comorbidities as well as ethnicity. 5 key findings →
Participants: 445 Evidence: low
Full summary, score breakdown and related studies → Original source
Among 6419 veterans screened (mean [SD] age, 67.6 [15.9] years; 716 female [11.2%]; 1740 Black or African American [27.1%]; 202 Hispanic or Latino [3.1%]; 4125 White [64.3%]), 2740 (42.7%) reported 1 or more digital needs. 4 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
Racial disparities in dementia may be reduced by prevention and management of disease and promoting educational attainment among blacks and Hispanics. 3 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
10 of the 926 studies in this tag that have a study page, picked by a fixed rule (a hash of each study's address), not by score or date; each page of this list shows a different 10. The same 10 appear here every time.
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 30,580 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 30,580 records, built mostly from automated pulls of Europe PMC (64.7% of the library) and OpenAlex (16.6%), 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.
1,037 records (3.4% 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 →
Newest studies, as a dated timeline → Atom feed Where this research is being discussed: events