(Class II and III evidence, Type D recommendation). 5 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Full text may need a subscription
27,380 Alzheimer's and dementia studies in plain English, each scored out of 100.
(Class II and III evidence, Type D recommendation). 5 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Full text may need a subscription
The degeneration of neurones in Parkinson's disease (PD) may involve oxidative stress. 2 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Full text may need a subscription
The PDAPP transgenic mouse, which overexpresses human amyloid precursor protein (APP717V-->F), has been shown to develop much of the pathology associated with Alzheimer disease. 4 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Proteolytic processing of amyloid precursor protein (APP) through an endosomal/lysosomal pathway generates carboxy-terminal polypeptides that contain an intact beta-amyloid domain. 4 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Full text may need a subscription
beta-amyloid protein (A beta) formation was reconstituted in permeabilized neuroblastoma cells expressing human Alzheimer beta-amyloid precursor protein (beta APP) harboring the Swedish double mutation associated with familial early-onset Alzheimer disease. 4 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Mutations in the presenilin 1 (PS1) and presenilin 2 (PS2) genes increase the production of the highly amyloidogenic 42-residue form of amyloid beta-protein (Abeta42) in a variety of cell lines and transgenic mice. 4 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
The community-based Rotterdam Study, the Netherlands. 4 key findings →
Design: cross-sectional Participants: 31 Evidence: low
Full summary, score breakdown and related studies → Original source Full text may need a subscription
Community-acquired pneumonia (CAP) in the elderly has a different clinical presentation than CAP in other age groups. 5 key findings →
Participants: 101 Evidence: moderate
Full summary, score breakdown and related studies → Original source
ApoE-4 was strongly associated with AD in this sample (allele frequency = 0.46 vs. 0.14 in controls, p < 0.000001). 5 key findings →
Participants: 679 Evidence: low
Full summary, score breakdown and related studies → Original source
Except for autosomal dominant early-onset families, genetic testing in asymptomatic individuals is unwarranted. 5 key findings →
Participants: 20 Evidence: low
Full summary, score breakdown and related studies → Original source Full text may need a subscription
In recent years, patients who are at high risk for developing Alzheimer's disease (AD) have become a focus of study. 1 key finding →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
The objectives of this study were to assess whether Teng's modification of the Mini-Mental State Examination (MMSE) improves its performance as a screening test for cognitive impairment and dementia, and to replicate this comparison in French and English language groups, and for differing assumptions concerning the relative importance of false negative and false positive errors. 5 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Full text may need a subscription
We developed a set of informant-based items describing performance of activities of daily living (ADL) by patients with Alzheimer's disease (AD) to identify which ADL are useful for assessment of patients in clinical trials. 4 key findings →
Participants: 45 Evidence: low
Full summary, score breakdown and related studies → Original source Full text may need a subscription
Population studies indicate that subjective memory complaints by elderly people are correlated with cognitive performance. 4 key findings →
Participants: 2,114 Evidence: low
Full summary, score breakdown and related studies → Original source Full text may need a subscription
Alzheimer's disease (AD) is a devastating neurological disorder characterized by loss of cognitive skills and progressive dementia. 4 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
In Reply. —The analyses of Drs Mirra and Gearing indicate that brain infarcts are not associated with NFTs in the neocortex.
Full summary, score breakdown and related studies → Original source Full text may need a subscription
The difficulty in differentiating progressive supranuclear palsy (PSP, also called Steele-Richardson-Olszewski syndrome) from other related disorders was the incentive for a study to determine the clinical features that best distinguish PSP. 5 key findings →
Participants: 24 Evidence: low
Full summary, score breakdown and related studies → Original source
Argyrophilic grains (ArG) and coiled bodies of argyrophilic grain disease (AgD) and the neurofibrillary lesions of Alzheimer's disease (AD) share similar antigenic determinants, among them hyperphosphorylated microtubule-associated protein tau. 2 key findings →
Participants: 41 Evidence: low
Full summary, score breakdown and related studies → Original source
We determined the effects of distraction on gait in healthy elderly subjects and Alzheimer's disease (AD) patients. 5 key findings →
Participants: 20 Evidence: low
Full summary, score breakdown and related studies → Original source
To determine whether cerebrospinal fluid (CSF) viral burden measurements can assist in the evaluation of human immunodeficiency virus (HIV)-associated neurocognitive disorders, we quantified HIV type 1 (HIV-1) RNA in CSF. 3 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Full text may need a subscription
In this study increased carer burden was related independently to increased levels of patient behaviour disturbance and decreased levels of informal social support. 2 key findings →
Participants: 50 Evidence: low
Full summary, score breakdown and related studies → Original source Full text may need a subscription
Risk of dementia by age 80 was more pronounced for Hispanic and black men compared with white men. 2 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Full text may need a subscription
Hereditary frontotemporal dementia (HFTD) is a rare autosomal dominant form of presenile dementia characterized by behavioral changes and reduced speech. 2 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
The presence of the APOE epsilon 4 allele encoding apolipoprotein E4 (apoE4) is the major genetic risk factor for late-onset Alzheimer's disease (AD). 4 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Full text may need a subscription
Applications of the random fluid-based probabilistic atlas include the transfer of multisubject 3D functional, vascular, and histologic maps onto a single anatomic template, the mapping of 3D atlases onto the scans of new subjects, and the rapid detection, quantification, and mapping of local shape changes in 3D medical images in disease and during normal or abnormal growth and development. 1 key finding →
Evidence: low
Full summary, score breakdown and related studies → Original source Full text may need a subscription
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 →