28,180 Alzheimer's and dementia studies in plain English, each scored out of 100.
Continued treatment with lithium was associated with a reduced rate of dementia in patients with bipolar disorder in contrast to continued treatment with anticonvulsants, antidepressants, or antipsychotics. 5 key findings →
Participants: 4,856 Evidence: low
Full summary, score breakdown and related studies → Original source
Testing an Alzheimer's disease continuum cohort, the area under the curve (AUC), sensitivity, specificity, and accuracy for the p-tau217/Aβ42 ratio reached 0.961, 93%, 92%, and 93%, respectively. 5 key findings →
Evidence: moderate
Full summary, score breakdown and related studies → Original source
The dominant theory of Alzheimer disease (AD) has been that amyloid-β (Aβ) accumulation in the brain is the initial cause of the degeneration leading to cognitive and functional deficits. 3 key findings →
Participants: 144 Evidence: low
Full summary, score breakdown and related studies → Original source
Among 275,144 initiators of DPP-4 inhibitors or sulfonylureas, followed for 750,846 person-years, DPP-4 inhibitors were associated with a reduced dementia risk compared with sulfonylureas (4.4 vs. 5.7 events per 1000 person-years; HR 0.77, 95% CI 0.71-0.85). 5 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
Three main recommendations are presented: (1) For AD, cholinesterase inhibitors (donepezil, rivastigmine, galantamine) are strongly recommended for improving cognition and daily function based on moderate evidence; (2) Cholinesterase inhibitors are conditionally recommended for vascular dementia and Parkinson's disease dementia, with a strong recommendation for Lewy body dementia; (3) For moderate to severe AD, NMDA receptor antagonist (memantine) is strongly recommended, demonstrating significant cognitive and functional improvements. 5 key findings →
Evidence: high
Full summary, score breakdown and related studies → Original source
Parkinson's disease (PD) is a progressive neurodegenerative disorder that affects over 1% of population over age 60. 1 key finding →
Evidence: high
Full summary, score breakdown and related studies → Original source
AChEI therapy had a significant effect on the percentage of stage 1 (p = 0.01) and stage 2 (p = 0.03) sleep. 5 key findings →
Participants: 41 Evidence: low
Full summary, score breakdown and related studies → Original source
Behavioural variant frontotemporal dementia (bvFTD) is a neurodegenerative disorder often neuropathologically associated with the accumulation of abnormally hyperphosphorylated tau, for which there is currently no disease-modifying treatment. 2 key findings →
Evidence: high
Full summary, score breakdown and related studies → Original source
Cross-sectional positron emission tomography (PET) studies find that cognitively normal carriers of the apolipoprotein E (APOE) epsilon4 allele, a common Alzheimer's susceptibility gene, have abnormally low measurements of the cerebral metabolic rate for glucose (CMRgl) in the same regions as patients with Alzheimer's dementia. 1 key finding →
Design: cross-sectional Evidence: moderate
Full summary, score breakdown and related studies → Original source
In patients treated up to 36 months, amyloid plaque levels continued to decrease in a dose- and time-dependent manner, with levels in the 10 mg/kg fixed-dose group reaching and remaining below a quantitative cut-point discriminating a positive/negative scan. 1 Reduced amyloid plaque levels were also observed in patients switched from placebo to aducanumab during the LTE. 5 key findings →
Design: clinical trial Evidence: high
Full summary, score breakdown and related studies → Original source
More than 57 million people globally suffer from neurodegenerative diseases, a figure expected to double every 20 years. 5 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
Overall, 392 patients were enrolled in HARMONY; 49 patients with PDD and 27 patients with DLB were included in the open-label safety analysis, of whom 46 met response criteria and were randomized to receive pimavanserin (n = 22) or placebo (n = 24) during the double-blind period. 4 key findings →
Design: phase-3-trial Participants: 76 Evidence: early
Full summary, score breakdown and related studies → Original source Free full text
BackgroundSeveral monoclonal antibodies designed to slow cognitive and functional decline in individuals with early Alzheimer's disease (AD) have been recently approved. 5 key findings →
Design: systematic-review Evidence: moderate
Full summary, score breakdown and related studies → Original source Full text may need a subscription
: Despite all scientific efforts and many protracted and expensive clinical trials, no new drug has been approved by FDA for treatment of Alzheimer disease (AD) since 2003. 5 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Treatment-resistant schizophrenia does not appear to be associated with neuronal, particularly axonal degeneration. 4 key findings →
Participants: 82 Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
Vascular contributions to cognitive impairment and dementia (VCID) are a common cause of cognitive decline, yet limited therapies exist. 2 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
The authors performed a 6-week, randomized, double-blind, placebo-controlled, parallel-group trial of carbamazepine (400 mg/day) with 21 agitated subjects (16 completers) who had been treated unsuccessfully with antipsychotics. 1 key finding →
Evidence: high
Full summary, score breakdown and related studies → Original source Full text may need a subscription
In a double blind randomized crossover trial lasting 6 months selegiline, a selective MAO-B inhibitor, was tested against placebo for activity on verbal memory performances in Alzheimer-type dementia (DAT). 1 key finding →
Evidence: high
Full summary, score breakdown and related studies → Original source Full text may need a subscription
Alzheimer's disease (AD) is the primary cause of age-related dementia. 3 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Full text may need a subscription
Cognitive impairment, including dementia, is a common but poorly recognized problem among patients with end-stage renal disease (ESRD), affecting 16-38% of patients. 1 key finding →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
The unique biochemical profile of homocysteine is characterized by chemical reactivity supporting a wide range of molecular effects and by a tendency to promote oxidant stress-induced cellular toxicity. 2 key findings →
Evidence: high
Full summary, score breakdown and related studies → Original source Free full text
Falls remain common in older people, with higher prevalence and morbidity in those who are cognitively impaired. 1 key finding →
Evidence: low
Full summary, score breakdown and related studies → Original source Full text may need a subscription
In Alzheimer disease (AD), which is the most common cause of dementia, the underlying disease pathology most probably precedes the onset of cognitive symptoms by many years. 5 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Full text may need a subscription
The objective of this study was to assess the prevalence and pattern of neuropsychological impairment in cohorts of human immunodeficiency virus (HIV)-infected individuals across pre- and post-HAART (highly active antiretroviral therapy) eras. 3 key findings →
Participants: 51 Evidence: low
Full summary, score breakdown and related studies → Original source Full text may need a subscription
Prevention of Alzheimer disease (AD) is a national and global imperative. 5 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Full text may need a subscription
10 of the 3,071 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 10. The same 10 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 28,180 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 28,180 records, built mostly from automated pulls of Europe PMC (61.7% of the library) and OpenAlex (18.1%), 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 →