Later birth year was associated with higher initial cognitive levels for Whites and Blacks, but not Hispanics. 5 key findings →
Design: cohort study Evidence: moderate
Full summary, score breakdown and related studies → Original source
27,380 Alzheimer's and dementia studies in plain English, each scored out of 100.
Later birth year was associated with higher initial cognitive levels for Whites and Blacks, but not Hispanics. 5 key findings →
Design: cohort study Evidence: moderate
Full summary, score breakdown and related studies → Original source
For self-care and mobility activities, respondents are asked whether in the past month they used specific assistive devices (e.g. grab bar, walker) while doing a particular activity, whether they had difficulty doing the activity by themselves when using named devices, frequencies compared with a year ago and whether they received help. 5 key findings →
Participants: 8,038 Evidence: moderate
Full summary, score breakdown and related studies → Original source
Neurodegenerative diseases are characterized by the progressive functional loss of neurons in the brain, causing cognitive impairment and motoneuron disability. 2 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
Although white matter hyperintensities have traditionally been viewed as a marker of vascular disease, recent pathology studies have found an association between white matter hyperintensities and Alzheimer's disease pathologies. 4 key findings →
Participants: 434 Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Three themes emerged from 29 included studies: self-care needs and behaviors of ICGs, barriers to performing self-care, and enablers of self-care. 1 key finding →
Design: systematic review Evidence: high
Full summary, score breakdown and related studies → Original source Full text may need a subscription
Anxiety disorders were the most common class of disorders both in the 12 months before the interview (weighted prevalence 5·0%, 4·2-5·8) and in lifetime (7·6%, 6·3-8·8). 5 key findings →
Design: cross-sectional Evidence: low
Full summary, score breakdown and related studies → Original source Full text may need a subscription
Multiple logistic regression analysis revealed increased likelihood of multiple system atrophy versus Lewy body disease and progressive supranuclear palsy if a patient developed orthostatic hypotension or urinary incontinence with the requirement for urinary catheters [multiple system atrophy versus Lewy body disease: odds ratio (OR): 2.0, 95% confidence interval (CI): 1.1-3.7, P = 0.021; multiple system atrophy versus progressive supranuclear palsy: OR: 11.2, 95% CI: 3.2-39.2, P < 0.01]. 2 key findings →
Participants: 26 Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
This study showed that plasma metabolites have the potential to match the AUC of well-established AD CSF biomarkers in a relatively small cohort. 4 key findings →
Participants: 883 Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
Our model could aid GPs or health service planners with the early detection of dementia. 1 key finding →
Design: case-control study Participants: 93,120 Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
Multiple linear regression models identified sources of signal covariance between neuroinflammation and brain connectivity profiles, in relation to the diagnostic group (patients, controls) and cognitive status. 3 key findings →
Participants: 28 Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Cell-cell communication via ligand-receptor signaling is a fundamental feature of complex organs. 4 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
The gap between predicted brain age using magnetic resonance imaging (MRI) and chronological age may serve as a biomarker for early-stage neurodegeneration. 4 key findings →
Design: longitudinal study Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
Our study compared the pain associated with 5- and 15-s subcutaneous injections of gantenerumab and evaluated the tolerability and pharmacokinetic properties of subcutaneous gantenerumab. 4 key findings →
Design: open-label trial Evidence: high
Full summary, score breakdown and related studies → Original source Free full text
Nearly half of all adults older than 60 years of age report sleep disturbance, as characterised either by reports of insomnia complaints with daytime consequences, dissatisfaction with sleep quality or quantity, or the diagnosis of insomnia disorder. 5 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Full text may need a subscription
White matter hyperintensities (WMHs) are frequently seen on brain magnetic resonance imaging scans of older people. 1 key finding →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
The cerebrospinal fluid (CSF) biochemical markers (biomarkers) Amyloidβ 42 (Aβ 42 ), total Tau (T-tau) and Tau phosphorylated at threonine 181 (P-tau 181 ) have proven diagnostic accuracy for mild cognitive impairment and dementia due to Alzheimer's Disease (AD). 5 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Survey-based cognitive tests and claims-based dementia diagnosis yielded equal prevalence estimates, yet only half were identified by both measures. 4 key findings →
Participants: 10,450 Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Sensory impairments were common: 28% had visual impairment, 35% had hearing loss, 22% had poor smell, 12% had touch insensitivity; 26% had more than two impairments, and 5.6% had more than three sensory impairments. 2 key findings →
Participants: 1,810 Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
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
CNS small vessel disease (CSVD) causes 25% of strokes and contributes to 45% of dementia cases. 1 key finding →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
LBD patients with AD copathology harbor greater neocortical SYN pathology. 1 key finding →
Participants: 36 Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
Virtual reality environments presented on tablets and smartphones have potential to aid the early diagnosis of conditions such as Alzheimer's dementia by quantifying impairments in navigation performance. 2 key findings →
Participants: 49 Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
There are variations in the interventions, such as location and dosage. 5 key findings →
Design: systematic review Evidence: high
Full summary, score breakdown and related studies → Original source Free full text
Neuronal and synaptic loss is characteristic in many neurodegenerative diseases, such as frontotemporal dementia and Alzheimer's disease. 2 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Alzheimer disease (AD) is a major cause of age-related dementia. 1 key finding →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
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 27,380 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 27,380 records, built mostly from automated pulls of Europe PMC (60.6% of the library) and OpenAlex (18.6%), 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.
1,032 records (3.8% 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 →