27,780 Alzheimer's and dementia studies in plain English, each scored out of 100.
By 2060, ADRD cases in China are projected to reach approximately 49.89 million, with the highest prevalence and economic burden concentrated in provinces such as Shandong, Sichuan, Jiangsu, Henan, and Guangdong. 5 key findings →
Design: longitudinal study Evidence: moderate
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Globally, the age-standardized incidence rates (ASIR) remained relatively steady. 5 key findings →
Evidence: moderate
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Examining the risk of clinically diagnosed dementia in older adults, our study found a 65% increased risk of Alzheimer's disease (AD) dementia in individuals with diabetes compared with those without. 5 key findings →
Design: cohort study Evidence: moderate
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Higher ARTS score was associated (all ps < 0.01) with incident MCI (hazard ratio [HR] = 1.29), dementia (HR = 1.33), and stroke (HR = 1.52) and with diastolic/systolic blood pressure, self-reported hypertension, claudication, congestive heart failure, smoking, and glomerular filtration rate in the combined sample. 5 key findings →
Participants: 707 Evidence: low
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Dementia prevalence exceeds 40% for individuals in advanced old age, but that figure is not informative about the lifetime risk of ever having dementia or the risk of having dementia for different durations. 3 key findings →
Design: longitudinal study Evidence: moderate
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Virtual data collection was highly feasible in both studies, successfully engaging participants in ADRD research, including those from underrepresented racial and ethnic groups. 5 key findings →
Design: cohort study Participants: 500 Evidence: moderate
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In 2023, there were 205,507 people with dementia in the CPRD database, 40,244 with Parkinson's disease, 3515 with MND and 1672 with Huntington's disease. 5 key findings →
Participants: 205,507 Evidence: low
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Subtypes of neuronal nicotinic acetylcholine receptors (nAChRs) are constructed from numerous subunit combinations that compose channel-receptor complexes with varied functional and pharmacological characteristics. 5 key findings →
Evidence: low
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The results suggest that education is robustly associated with level of cognitive function but not with rate of cognitive decline and that the former association primarily accounts for education's correlation with risk of dementia in old age. 2 key findings →
Evidence: low
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We determined the relationship between apolipoprotein (Apo)E, MRI, and low cognitive scores. 1 key finding →
Evidence: low
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Antibodies to ubiquitin have been used to search for evidence of abnormal protein degradation in amyotrophic lateral sclerosis--motor neuron disease (ALS). 1 key finding →
Evidence: low
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A heterogeneous community sample (n=371) of predominantly ethnic minority elderly assessed by standardized research protocol, 231 of whom met criteria for dementia or mild cognitive impairment (MCI). 2 key findings →
Participants: 371 Evidence: low
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Prevalence of cognitive impairment and dementia appear not to vary widely across the centres examined in this study, which provides stable estimates by age and sex for AGECAT O3 and above, and norms for MMSE. 2 key findings →
Participants: 550,000 Evidence: low
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Algorithmic diagnoses provide a cost-effective way to conduct dementia research. 4 key findings →
Evidence: low
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Alzheimer's disease (AD) is the most frequent cause of dementia, where the abnormal accumulation of beta-amyloid (Aβ) and tau lead to neurodegeneration as well as loss of cognitive, behavioral, and functional abilities. 5 key findings →
Evidence: low
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We describe the history, development, and success of the recruitment and screening procedures used by researchers at the University of California, Davis Alzheimer's Disease Center (UCD ADC) to facilitate minority enrollment in research. 5 key findings →
Design: longitudinal study Evidence: moderate
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Prevalence, 3-year incidence, and types of dementia are comparable in Black and White elderly in the Piedmont area of North Carolina. 3 key findings →
Participants: 4,136 Evidence: low
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Contrary to some prior reports, behavioral variant frontotemporal dementia (bv-FTD) patients who progress over time are typically impaired on executive tasks at first presentation, although an important minority of true FTD patients perform normally. 3 key findings →
Evidence: low
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Our data support the use of population-based cutpoints over standard cutoff scores, in that the global scale at the conventional cutoff was less sensitive than the battery at the same percentile, and because adequate norms do not exist for tests such as those in the battery. 1 key finding →
Participants: 1,367 Evidence: low
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Design identification of relevant items, pre-testing of items and refinement of administrative procedures and scoring in four successive groups of 30 subjects each, pilot testing in a group of 100 subjects comparable to those for whom the measure is intended, administration to a representative sample of 387 people aged 55 and older, and assessment of the reliability of the final measure. 2 key findings →
Participants: 30 Evidence: low
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Understanding variability in conceptions of dementia in multiethnic populations is important to improve care and guide research. 2 key findings →
Design: cross-sectional Evidence: low
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A stratified random sample of 83 black and 81 white community residents aged 65 years and older in a five-county area in the Piedmont region of North Carolina was evaluated for dementia, using the Diagnostic and Statistical Manual of Mental Disorders, Third Edition, and the National Institute of Neurological Disorders and Stroke--Alzheimer's Disease and Related Disorders Association criteria. 5 key findings →
Participants: 164 Evidence: low
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In 2017, a total of 261,914 deaths attributable to dementia as an underlying cause of death were reported in the United States. 4 key findings →
Participants: 261,914 Evidence: low
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Human immunodeficiency virus (HIV)-associated cognitive impairment, a significant cause of morbidity, affects up to 30% of HIV-infected people. 3 key findings →
Design: cross-sectional Evidence: moderate
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In individuals without a prior diagnosis of cognitive impairment, the prevalence of dementia was low, but the prevalence of CIND was high. 1 key finding →
Design: cross-sectional Evidence: low
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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 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.
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 →