Hearing loss is independently associated with incident all-cause dementia. 4 key findings →
Design: longitudinal study Participants: 639 Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
Research
27,780 Alzheimer's and dementia studies in plain English, each scored out of 100.
In this study, both higher Mediterranean-type diet adherence and higher physical activity were independently associated with reduced risk for AD. 5 key findings →
Design: cohort study Participants: 282 Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
Among military veterans, mTBI is associated with 56% increased risk of PD, even after adjusting for demographics and medical/psychiatric comorbidities. 4 key findings →
Design: cohort study Participants: 325,870 Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
Progressive dementia was detected by PET with a sensitivity of 93% (191/206) and a specificity of 76% (59/78). 4 key findings →
Design: longitudinal study Participants: 146 Evidence: moderate
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Four hundred ninety-four individuals eventually developed dementia and 427 (86%) of these persons were admitted at least once; 2525 remained free of dementia and 1478 (59%) of those were admitted at least once. 4 key findings →
Design: cohort study Participants: 3,019 Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
During a mean (SD) follow-up of 6.1 (3.2) years, 1601 participants had no hospitalization, 1287 had 1 or more noncritical illness hospitalizations, and 41 had 1 or more critical illness hospitalizations. 4 key findings →
Design: cohort study Participants: 2,929 Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
Delirium can accelerate the trajectory of cognitive decline in patients with Alzheimer disease (AD). 2 key findings →
Design: prospective cohort Participants: 72 Evidence: high
Full summary, score breakdown and related studies → Original source Free full text
Compared with abstention, consumption of 1 to 6 drinks weekly is associated with a lower risk of incident dementia among older adults. 5 key findings →
Design: cohort study Participants: 5,888 Evidence: moderate
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Although studies in animal models suggest that TREM2 is protective against Alzheimer's pathology, its effect on tau pathology and its potential beneficial role in people with Alzheimer's disease is still unclear. 4 key findings →
Design: longitudinal study Participants: 155 Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
71/100
The Wisconsin Registry for Alzheimer's Prevention is a longitudinal observational cohort study enriched with persons with a parental history (PH) of probable Alzheimer's disease (AD) dementia. 3 key findings →
Design: cohort study Participants: 1,561 Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
Health care expenditures among persons with dementia were substantially larger than those for other diseases, and many of the expenses were uncovered (uninsured). 1 key finding →
Design: retrospective cohort Participants: 1,702 Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
Late-life declines in blood pressure following prolonged hypertension may be associated with poor cognitive outcomes. 5 key findings →
Design: cohort study Participants: 833 Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
Participation in leisure activities is associated with a reduced risk of dementia, even after adjustment for base-line cognitive status and after the exclusion of subjects with possible preclinical dementia. 5 key findings →
Design: prospective cohort Participants: 469 Evidence: moderate
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The study cohorts had an average age of 75.0 years (95% CI, 74.8-75.2 years) in 2000 and 74.8 years (95% CI, 74.5-75.1 years) in 2012 (P = .24); 58.4% (95% CI, 57.3%-59.4%) of the 2000 cohort was female compared with 56.3% (95% CI, 55.5%-57.0%) of the 2012 cohort (P Conclusions and relevance The prevalence of dementia in the United States declined significantly between 2000 and 2012. 4 key findings →
Design: longitudinal study Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
71/100
Using stratification with simply assessed markers, it is now not only possible, but practical to include patients with RBD in neuroprotective trials against Parkinson disease, multiple system atrophy, and dementia with Lewy bodies. 3 key findings →
Design: prospective cohort Participants: 89 Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
In clinical samples, people with amnestic MCI are at high risk of developing Alzheimer's disease dementia, with annual rates of progression from MCI to Alzheimer's disease estimated at approximately 10% to 15% compared with the base incidence rates of Alzheimer's disease dementia of 1% to 2% per year. 5 key findings →
Design: cohort study Participants: 33 Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
Among Aβ-positive individuals, greater CR related to attenuated clinical progression in predementia stages of AD, but accelerated cognitive decline after the onset of dementia. 2 key findings →
Design: longitudinal study Participants: 175 Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
71/100
We found that accelerated increase in tau-PET signal was observed in amyloid-β-positive mild cognitive impairment (3.0 ± 5.3%) and Alzheimer's disease dementia (2.9 ± 5.7%), respectively, when compared to either amyloid-β-negative cognitively unimpaired (0.4 ± 2.7%), amyloid-β-negative mild cognitive impairment (-0.4 ± 2.3%) or amyloid-β-positive cognitively unimpaired (1.2 ± 2.8%). 4 key findings →
Design: cohort study Participants: 157 Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
Coding variants in the triggering receptor expressed on myeloid cells 2 (TREM2) are associated with late-onset Alzheimer's disease (AD). 4 key findings →
Design: longitudinal study Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
Peripheral inflammatory markers are elevated in patients with dementia. 4 key findings →
Design: cohort study Participants: 5,217 Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
We evaluated the performance of CSF biomarkers for predicting risk of clinical decline and conversion to dementia in non-demented patients with cognitive symptoms. 4 key findings →
Design: longitudinal study Participants: 619 Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
Healthy cognitive ageing is a societal and public health priority. 4 key findings →
Design: cohort study Participants: 22,059 Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
The APOE-ε4 allele has long been associated with increased risks of Alzheimer's disease and mortality, but the effect of the less prevalent APOE-ε2 allele on diseases in the elderly and survival remains elusive. 4 key findings →
Design: cohort study Participants: 38,537 Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
Whether dietary and nutrition and dietary patterns are associated with the development of dementia is an interesting research question. 3 key findings →
Design: cohort study Participants: 340,000 Evidence: moderate
Full summary, score breakdown and related studies → Original source
A deep learning algorithm based on patient demographic information and longitudinal clinical notes appeared to show promising results in predicting mortality among patients with dementia in different time frames. 3 key findings →
Design: cohort study Participants: 26 Evidence: moderate
Full summary, score breakdown and related studies → Original source
Where “Free full text” comes from
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
How the 0–100 score works — and why some entries are capped
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.
- Journal tier up to 10 pts
- Journal's citation record up to 4 pts
- Study design up to 12 pts
- Strength of evidence up to 5 pts
- Peer-review validation up to 10 pts
- How recent up to 5 pts
- Sample size up to 4 pts
- Effect reported up to 3 pts
- Studied in people up to 3 pts
- Randomised / blinded up to 2 pts
- Times cited up to 7 pts
- Citations per year up to 5 pts
- Impact for its field and year up to 6 pts
- Cited by studies here up to 6 pts
- Still being cited up to 4 pts
- Senior author's track record up to 4 pts
- Institution's track record up to 3 pts
- Multi-centre collaboration up to 3 pts
- Indexed in PubMed up to 2 pts
- Free to read up to 2 pts
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 27,780 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.
What this library is — and isn't
This is a large sample of the Alzheimer's literature, not an exhaustive index of it. It holds 27,780 records, built mostly from automated pulls of Europe PMC (61.1% of the library) and OpenAlex (18.3%), 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.
1,034 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 →