27,780 Alzheimer's and dementia studies in plain English, each scored out of 100.
Early NPS burden as well as NPS severity progression rate, independently of cognitive status, might be useful clinical metrics and may help predict underlying pathological diagnoses. 3 key findings →
Participants: 75 Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Higher scores in cognitive screening [odds ratio (OR): 1.23], facial emotion processing (OR: 1.69), episodic memory (OR: 1.09), animal fluency (OR: 1.17), working memory (OR: 1.18), letter fluency (OR: 1.17) and depressive symptoms (OR: 7.41) were significantly associated with PPD (all Ps ≤ 0.010). 2 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Three factors (psychosis, agitation, and affective disturbance) were extracted for AD. 5 key findings →
Participants: 180 Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Recent work suggests that impairment in emotional processing, along with disinhibition, constitutes the necessary elements for CB in bvFTD. 4 key findings →
Participants: 87 Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Transactive response (TAR) DNA-binding protein 43 (TDP-43) is a critical RNA/DNA-binding protein involved in various cellular processes, including RNA splicing, transcription regulation, and RNA stability. 1 key finding →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Our findings were compared to other published RNA sequencing data of tauopathies (Alzheimer's dementia, progressive supranuclear palsy and FTLD with MAPT), FTLD-TDP (subtypes A&B) and available proteomics of this cohort. 5 key findings →
Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
See Attems and Jellinger (doi:10.1093/brain/awx360) for a scientific commentary on this article. 4 key findings →
Evidence: moderate
Full summary, score breakdown and related studies → Original source
An unusually high frequency of atypical Parkinson syndrome has been delineated over the last 5 years in the French West Indies. 5 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
Progressive supranuclear palsy-parkinsonism (PSP-P) is a primary tauopathy characterised by neurofibrillary degeneration, which is frequently mistaken for Parkinson's disease (PD), multiple system atrophy (MSA), and vascular parkinsonism (VP) at presentation. 5 key findings →
Participants: 444 Evidence: low
Full summary, score breakdown and related studies → Original source
The authors report on clinical features and mortality rates in a group of 149 patients with apparent idiopathic parkinsonism starting before the age of 40 years. 1 key finding →
Participants: 149 Evidence: low
Full summary, score breakdown and related studies → Original source
Parkinson's disease (PD) is a multisystem neurodegenerative disorder. 2 key findings →
Participants: 101 Evidence: low
Full summary, score breakdown and related studies → Original source
Thirty cases of diffuse Lewy body disease (DLBD) have been reported, primarily by neuropathologists, but an associated clinical syndrome has not been clearly defined. 1 key finding →
Evidence: low
Full summary, score breakdown and related studies → Original source
In contrast to clinic-based samples, the most frequently occurring complications of PD in this community-based sample were axial features such as postural instability with falls. 5 key findings →
Participants: 124 Evidence: low
Full summary, score breakdown and related studies → Original source
Lewy body disorders (LBD) are common neurodegenerative diseases characterized by the presence of aggregated α-synuclein in Lewy bodies and Lewy neurites in the central and peripheral nervous systems. 1 key finding →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Behavioral variant frontotemporal dementia (bvFTD) disrupts our most human social and emotional functions. 2 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Full text may need a subscription
Pure vascular parkinsonism without evidence of nigral Lewy body pathology may occur as a distinct clinicopathological entity, but a much more frequent occurrence is the comorbid presence of age-associated white matter lesions (WMLs) in idiopathic Parkinson disease (PD). 3 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Sixteen patients with progressive language disorder have been studied longitudinally. 3 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Full text may need a subscription
Although frontotemporal lobar degeneration with ubiquitin/TDP-43-positive inclusions (FTLD-TDP) and Pick's disease are common pathological substrates in sporadic FTLD, clinical differentiation of these diseases is difficult. 3 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Full text may need a subscription
Few studies have examined connected speech in demented and non-demented patients with Parkinson's disease (PD). 2 key findings →
Participants: 35 Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Amyotrophic lateral sclerosis (ALS) has long been considered to be a purely motor disorder. 5 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Neurodegenerative processes of various types of dementia start years before symptoms, but the presence of a "neural reserve", which continuously feeds and supports neuroplastic mechanisms, helps the aging brain to preserve most of its functions within the "normality" frame. 1 key finding →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Oxidative stress has been proposed as a pathogenetic mechanism in Parkinson's disease (PD). 2 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Full text may need a subscription
Animal models are an important aid in experimental medical science because they enable one to study the pathogenetic mechanisms and the therapeutic principles of treating the functional disturbances (symptoms) of human diseases. 2 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Full text may need a subscription
The precursor of the non-Abeta component of Alzheimer's disease amyloid (NACP) (also known as a-synuclein) is a presynaptic terminal molecule that accumulates in the plaques of Alzheimer's disease. 3 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Combined neuropathological and neurochemical assessment of the nucleus of Meynert in senile dementia of Alzheimer type (SDAT) have demonstrated that the cholinergic biochemical activity, choline acetyltransferase, is more extensively reduced in the nucleus (over 90%) than the loss of putative cholinergic perikarya (35%). 3 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
9 of the 1,021 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 9. The same 9 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 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 →