29,380 Alzheimer's and dementia studies in plain English, each scored out of 100.
Many community-residing PWD and their caregivers have unmet dementia-related needs for care, services, and support. 4 key findings →
Design: cross-sectional Participants: 254 Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Older age and vascular disease, particularly among African Americans, are associated with increased brain atrophy and WMH burden. 4 key findings →
Design: cross-sectional Participants: 769 Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
This study provides a review and analysis of the empirical research published since 1985 that has examined the impact of race, culture, and/or ethnicity on the dementia caregiving experience. 1 key finding →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
On the eve of the 2012 summer Olympic Games, the first Lancet Series on physical activity established that physical inactivity was a global pandemic, and global public health action was urgently needed. 5 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Full text may need a subscription
Under Bronfenbrenner's macrosystem framework, we highlight key quantitative and qualitative studies linking S/SDOH with AD/ADRD, identify scientific gaps in the literature, and propose guidance for future research. 1 key finding →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
There are significant barriers to help seeking for dementia in ME groups. 2 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Full text may need a subscription
Despite lower dementia prevalence, Black participants with dementia had more dementia risk factors, as well as greater cognitive impairment and neuropsychiatric symptom severity than White participants. 1 key finding →
Participants: 5,700 Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
In this population, the prevalence of AD and other dementias was low, increased with age, and was not associated with gender or literacy. 5 key findings →
Participants: 5,126 Evidence: moderate
Full summary, score breakdown and related studies → Original source Full text may need a subscription
A technology-based format was feasible for delivering a multi-component intervention to minority family dementia caregivers. 3 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Full text may need a subscription
Among elderly Medicare beneficiaries with PD, race, sex, and neighborhood SES are strong independent predictors of DBS receipt. 5 key findings →
Design: cohort study Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
Survival after dementia diagnosis differs by race/ethnicity, with shortest survival among whites and longest among Asian Americans. 3 key findings →
Participants: 23,032 Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Two of every three persons living with dementia reside in low- and middle-income countries (LMICs). 5 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Late-life lower BMI relates to faster rates of decline in cognition, specifically semantic memory and episodic memory, in both blacks and whites. 2 key findings →
Design: cohort study Participants: 2,134 Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
Numerous tools for assessment of cognitive impairment in low-literacy settings have been developed, and tools developed for use in high-income countries have also been validated in low-literacy settings. 2 key findings →
Design: meta-analysis Evidence: high
Full summary, score breakdown and related studies → Original source Free full text
Systemic racism leads to racial/ethnic residential segregation, which can result in health inequities. 3 key findings →
Participants: 4,616 Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Subjective cognitive decline (SCD) may be an early indicator of Alzheimer disease and related dementias (ADRD), yet its association with plasma biomarkers remains unclear among middle-aged and older adults (aged 50-86 years). 4 key findings →
Design: cross-sectional Participants: 5,712 Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
In cognitively unimpaired (CU) adults at baseline, the risk for progression to dementia increased for every decile increase in the ADI state ranking (hazard ratio = 1.06, 95% confidence interval (1.01-1.11), P = .01). 5 key findings →
Participants: 4,699 Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Thirty-two percent of residents had DNR directives, whereas less than 2% had DNH directives. 5 key findings →
Design: cohort study Participants: 1,962,742 Evidence: moderate
Full summary, score breakdown and related studies → Original source Full text may need a subscription
(n = 2,392) had a mean age of 74.4 years, 60.4% were female, and 17.1% were of self-reported Black race. 5 key findings →
Design: cross-sectional Participants: 2,392 Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
On average, participants were aged 63 years and had 16 years of education. 5 key findings →
Design: randomized controlled trial Participants: 100 Evidence: high
Full summary, score breakdown and related studies → Original source Free full text
There were 13,145 individuals with risk factor data between 2015 and 2018 (51.1% aged 18-44, 31.0% aged 45-64, and 17.9% aged ≥65 years; 51.5% female after survey-weighting). 5 key findings →
Design: cross-sectional Participants: 13,145 Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Feeding tube use is significantly more common in Blacks than in Whites. 5 key findings →
Design: cross-sectional Participants: 4,920 Evidence: low
Full summary, score breakdown and related studies → Original source
Blood-based biomarkers are highly associated with amyloid PET/CSF results in diverse populations enrolled at clinical trial sites. 3 key findings →
Participants: 417 Evidence: low
Full summary, score breakdown and related studies → Original source
The current data provide strong support for continued investigations that examine the risk factors for and biomarkers of AD among diverse populations. 3 key findings →
Participants: 1,705 Evidence: low
Full summary, score breakdown and related studies → Original source
Among 6437 participants screened, with non-Hispanic (NH) White as the reference group, odds ratios of plasma ineligibility were 2.88 (95% confidence interval [CI]: 1.40-6.96) for Hispanic Black, 1.60 (95% CI: 1.33-1.92) for Hispanic White, 2.10 (95% CI: 1.37-3.38) for NH Asian, and 1.59 (95% CI: 1.27-2.0) for NH Black participants. 3 key findings →
Participants: 6,437 Evidence: low
Full summary, score breakdown and related studies → Original source
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 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 →