28,180 Alzheimer's and dementia studies in plain English, each scored out of 100.
When compared with the Low MedDiet group, the High MedDiet group was associated with better L&M performance and larger dentate gyri. 5 key findings →
Design: cross-sectional Participants: 82 Evidence: moderate
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
The results showed a 73% increased risk of ATD, 56% increase of AD and 127% increase of VaD in diabetes patients. 3 key findings →
Participants: 20 Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Midlife serum total cholesterol was associated with an increased risk of AD and VaD. 3 key findings →
Participants: 9,844 Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
We observed that simvastatin is associated with a significant reduction in the incidence of dementia in subjects > or =65 years, using any of three models. 5 key findings →
Participants: 700,000 Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Identification of potentially modifiable risk factors for cognitive deterioration is important. 5 key findings →
Participants: 5,607 Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Knowledge on survival in dementia is crucial for patients and public health planning. 4 key findings →
Participants: 15,209 Evidence: moderate
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This study tested the hypotheses that late-midlife obstructive sleep apnea (OSA) and short and long sleep duration are associated with dementia over 15 years of follow-up. 4 key findings →
Participants: 1,667 Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Because cardiovascular (CV) risk factors have been associated with declines in cognitive functions and late life dementia, CV risk factors should also be associated with brain atrophy. 4 key findings →
Participants: 1,812 Evidence: moderate
Full summary, score breakdown and related studies → Original source Full text may need a subscription
Plasma metabolomic profile is disturbed in dementia patients, but previous studies have discordant conclusions. 4 key findings →
Participants: 24 Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Several studies indicate that stroke increases the risk of dementia. 4 key findings →
Design: cohort study Participants: 6,724 Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
& objective Evidence is limited on how estimated glomerular filtration rate (eGFR) and urinary albumin-creatinine ratio (UACR) relate to dementia at different ages. 4 key findings →
Design: cohort study Participants: 9,967 Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
This study examines whether neuroticism is differentially associated with risk of incident Alzheimer's disease (AD), vascular dementia (VD), and frontotemporal dementia (FTD) using a prospective study design. 4 key findings →
Participants: 401,422 Evidence: low
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Whether or not there is targeted pharmacotherapy for dementia, an active and healthy lifestyle that includes physical activity (PA) may be a better option than medication for preventing dementia. 4 key findings →
Participants: 484,169 Evidence: low
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Among 9239 eligible respondents, 5258 (57.7%) were female and 1210 (9.1%) were Black, 574 (4.7%) were Hispanic, and 7297 (84.4%) were White. 5 key findings →
Design: cohort study Evidence: moderate
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Here we show that the associations of 57 metabolites with dementia risk varied by APOE4 genotype or other AD/ADRD risk variants. 3 key findings →
Evidence: low
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During an average follow-up period of 14.5 years, a total of 9520 (81.1%) participants had used NSAIDs at any given time, and 2091 participants developed dementia. 5 key findings →
Participants: 11,745 Evidence: high
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Bariatric surgery was associated with a significantly reduced incidence of ADRD, evidenced by a subdistribution hazard ratio (SHR) of 0.37 (95% confidence interval [CI]: 0.15–0.89; P = 0.03). 4 key findings →
Design: longitudinal study Participants: 5,303 Evidence: moderate
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Meta-analysis identified 44 CpGs and 44 differentially methylated regions consistently associated with time to dementia in both cohorts. 5 key findings →
Design: meta-analysis 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
In a meta-analysis of 2 one-sample MR studies, the odds ratio (OR) for 1-SD higher BMI in predicting vascular-related dementia was 1.63 (95% CI, 1.13-2.35). 5 key findings →
Design: meta-analysis Evidence: high
Full summary, score breakdown and related studies → Original source Free full text
Poor oral health and genetic susceptibility have each been linked to dementia risk, but their joint effects and subtype-specific associations remain unclear. 5 key findings →
Design: cohort study Participants: 7,553 Evidence: moderate
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We investigated whether a discrepancy between chronological and biological age in midlife and late-life is associated with cognition and dementia risk. 5 key findings →
Design: cohort study Participants: 11,758 Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
Analyses revealed significant nonlinear interaction effects of ELS severity and age on NfL and GFAP serum concentrations, total and subcortical gray matter volume loss, increased third ventricular volume, and cognitive impairment. 3 key findings →
Participants: 179 Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Ultimately, 10,373 participants were included in the analysis. 5 key findings →
Design: longitudinal study Participants: 10,373 Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
10 of the 1,131 studies in this tag, 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 28,180 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 28,180 records, built mostly from automated pulls of Europe PMC (61.7% of the library) and OpenAlex (18.1%), 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.
1,034 records (3.7% 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 →