From 1990 to 2019, the Alzheimer's disease burden increased worldwide. 2 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
30,580 Alzheimer's and dementia studies in plain English, each scored out of 100.
From 1990 to 2019, the Alzheimer's disease burden increased worldwide. 2 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Combining aerobic exercise with cognitive training improves clinical outcomes in older adults with MCI and may influence stress-related neurobiological pathways. 5 key findings →
Design: randomized controlled trial Participants: 28 Evidence: high
Full summary, score breakdown and related studies → Original source Free full text
The findings underscore the potential of integrating physical exercise into comprehensive AD management strategies. 4 key findings →
Design: systematic review Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
The data of 508,107 individuals were analyzed (mean [standard deviation] age, 67.6 [10.7] years; 66.8% women and 33.2% men), and 39,318 developed Alzheimer's disease (22,572 controls and 16,746 using aspirin). 5 key findings →
Design: cohort study Participants: 508,107 Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
PD may be a modifiable risk factor for AD, and periodontal interventions could contribute to AD prevention and management. 2 key findings →
Design: case-control study Participants: 52 Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
We here review evidence gathered for nearly a decade on non-invasive brain stimulation (NIBS), a less known therapeutic strategy aiming to limit cognitive decline associated with neurodegenerative conditions. 1 key finding →
Participants: 70 Evidence: high
Full summary, score breakdown and related studies → Original source
Lateralization of function is an important organization of the human brain. 3 key findings →
Design: longitudinal study Evidence: moderate
Full summary, score breakdown and related studies → Original source
Our results demonstrated that dual-task could significantly improve the ability to predict cognitive impairment based on gait parameters such as gait speed (GS) and stride length (SL). 5 key findings →
Participants: 38 Evidence: low
Full summary, score breakdown and related studies → Original source
The results revealed abnormally increased and decreased ALFF and ReHo in PD-CN patients within the default mode network (posterior cingulate, inferior parietal cortex, parahippocampus, entorhinal cortex), sensorimotor cortex (primary motor, pre/post-central gyrus), basal ganglia (putamen, caudate), and posterior cerebellar lobule VII, which mediates cognition. 4 key findings →
Design: longitudinal study Evidence: moderate
Full summary, score breakdown and related studies → Original source
Of the 17,668 respondents, 8,396 (47.5%) were men. 5 key findings →
Design: cross-sectional Evidence: moderate
Full summary, score breakdown and related studies → Original source
Plasma a-synuclein level was significantly increased in patients with PD and APS when compared with controls and FTD without parkinsonism (p<0.01). 5 key findings →
Participants: 204 Evidence: low
Full summary, score breakdown and related studies → Original source
Manual ELISA assays are the most commonly used methods for quantification of biomarkers; however, they often show inter- and intra-laboratory variability that limits their wide use. 3 key findings →
Participants: 34 Evidence: low
Full summary, score breakdown and related studies → Original source
The disease course of arteriolosclerosis CSVD may be related to cognitive function and total MRI burden. 5 key findings →
Participants: 146 Evidence: low
Full summary, score breakdown and related studies → Original source
Conversion rates increased with increasing CDR-SB scores. 2 key findings →
Participants: 1,827 Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Clinical studies found that elevated cortisol was associated with poorer overall cognitive functioning, as well as with poorer episodic memory, executive functioning, language, spatial memory, processing speed, and social cognition; while in animals, glucocorticoid administration resulted in cognitive impairment and abnormal behavior. 5 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Sleep disturbances are frequent in AD. 4 key findings →
Design: longitudinal study Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
Nine hundred and four participants (342 AD and 562 NAD) were studied; 400 in Mtp-1 and 504 in Mtp-2. 5 key findings →
Participants: 904 Evidence: low
Full summary, score breakdown and related studies → Original source
Microglia are the resident macrophages of the central nervous system. 5 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Research indicates that after advanced age, the major risk factor for late-onset Alzheimer's disease (AD) is female sex. 2 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Neuropsychological tests showed significant differences between controls and mdMCI, and between controls and eD participants; GPCog, MoCA, PF, and SF also discriminated between controls and aMCI. 5 key findings →
Participants: 96 Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
This bibliometric analysis provides a comprehensive overview of research trends in immune-related cognitive impairment. 2 key findings →
Design: systematic review Participants: 3,737 Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Of 101 participants, 85 older adults without dementia (84.1%) who completed the study protocol were included in the statistical analysis. 5 key findings →
Participants: 51 Evidence: low
Full summary, score breakdown and related studies → Original source
A total of 1,350 publications with 59,818 citations were identified. 5 key findings →
Participants: 1,350 Evidence: low
Full summary, score breakdown and related studies → Original source
A total of 717 articles were identified, showing an upward trend in annual publications. 5 key findings →
Participants: 717 Evidence: low
Full summary, score breakdown and related studies → Original source
We found a significant correlation of CSF α-syn level with PM2.5 in urban participants. 4 key findings →
Participants: 933 Evidence: low
Full summary, score breakdown and related studies → Original source
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 30,580 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 30,580 records, built mostly from automated pulls of Europe PMC (64.7% of the library) and OpenAlex (16.6%), 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.
1,037 records (3.4% of the library) are not peer-reviewed — 964 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 →
Newest studies, as a dated timeline → Atom feed Where this research is being discussed: events