Essential hypertension has devastating effects on the brain, being the major cause of stroke and a leading cause of dementia. 4 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
28,180 Alzheimer's and dementia studies in plain English, each scored out of 100.
Essential hypertension has devastating effects on the brain, being the major cause of stroke and a leading cause of dementia. 4 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Alzheimer's disease [AD] is the most common cause of dementia in North America. 5 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Diabetes mellitus (DM) is considered to be a risk factor for dementia including Alzheimer's disease (AD). 3 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Although non-BzRAs have improved safety profiles compared with benzodiazepines, their side effects include dementia, serious injury, and fractures, which should limit their use. 3 key findings →
Evidence: high
Full summary, score breakdown and related studies → Original source Full text may need a subscription
Although diagnosed by characteristic motor features, Parkinson's disease may be preceded, and is frequently accompanied by, a wide range of cognitive and neuropsychiatric features. 1 key finding →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Alzheimer's disease is the most prevalent cause of dementia, which is defined by the combined presence of amyloid and tau, but researchers are gradually moving away from the simple assumption of linear causality proposed by the original amyloid hypothesis. 4 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
AF contributes to stroke and secondary cognitive decline. 3 key findings →
Participants: 563 Evidence: low
Full summary, score breakdown and related studies → Original source Full text may need a subscription
Rapid-eye-movement (REM) sleep behaviour disorder (RBD) is characterised by loss of muscular atonia and prominent motor behaviours during REM sleep. 2 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Full text may need a subscription
Metabolic dysfunction is a well-established feature of Alzheimer's disease (AD), evidenced by brain glucose hypometabolism that can be observed potentially decades prior to the development of AD symptoms. 2 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Hypertension affects a significant proportion of the adult and aging population and represents an important risk factor for vascular cognitive impairment and late-life dementia. 2 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Loneliness is associated with increased risk of dementia. 3 key findings →
Participants: 12,030 Evidence: low
Full summary, score breakdown and related studies → Original source
To determine whether neurodegeneration in Alzheimer disease brain is associated with degradation of structural cell membrane molecules, we measured tissue levels of the major membrane phospholipids and their metabolites in three cortical areas from postmortem brains of Alzheimer disease patients and matched controls. 5 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Beta-secretase (BACE1) is the rate-limiting protease for the generation of the amyloid beta-peptide (Abeta) in Alzheimer disease. 5 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
The mechanisms by which trisomy 21 leads to the characteristic Down syndrome (DS) phenotype are unclear. 5 key findings →
Participants: 685 Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Lysosome dysfunction arises early and propels Alzheimer's disease (AD). 2 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Amyloid beta (Abeta) immunoreactivity in neurons was examined in brains of 32 control subjects, 31 people with Down syndrome, and 36 patients with sporadic Alzheimer's disease to determine if intraneuronal Abeta immunoreactivity is an early manifestation of Alzheimer-type pathology leading to fibrillar plaque formation and/or neurofibrillary degeneration. 4 key findings →
Participants: 31 Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Adult individuals with Down syndrome (DS) develop Alzheimer disease (AD). 1 key finding →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
The alteration of the insulin-signaling/mTOR pathways represents an early event in DS brain and likely contributes to the cerebral dysfunction and intellectual disability observed in this unique population. 1 key finding →
Participants: 17 Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Correlational analysis of cerebral metabolic (rCMRglc) data obtained with positron emission tomography (PET) assesses group differences and has demonstrated reduced frontal-parietal rCMRglc interdependencies in Alzheimer's disease (AD). 2 key findings →
Design: longitudinal study Participants: 15 Evidence: moderate
Full summary, score breakdown and related studies → Original source Full text may need a subscription
Until now, data on the longitudinal trajectories of amyloid accumulation, tau pathology, and brain atrophy over multiple time points remain scarce in DS. 1 key finding →
Design: longitudinal study Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
The ε4 allele of the apolipoprotein E gene (APOE ε4) is associated with an additional risk for AD. 5 key findings →
Design: cross-sectional Participants: 240 Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Parkinson's disease (PD) affects 1-2 per 1000 of the population at any time. 2 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Full text may need a subscription
Several recent breakthroughs have provided notable insights into the pathogenesis of amyotrophic lateral sclerosis (ALS), with some even shifting our thinking about this neurodegenerative disease and raising the question as to whether this disorder is a proteinopathy, a ribonucleopathy or both. 1 key finding →
Evidence: low
Full summary, score breakdown and related studies → Original source Full text may need a subscription
TAR DNA binding protein 43 (TDP-43) is a versatile RNA/DNA binding protein involved in RNA-related metabolism. 5 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Current concepts of the pathogenesis of Parkinson's disease (PD) center on the formation of reactive oxygen species and the onset of oxidative stress leading to oxidative damage to substantia nigra pars compacta. 2 key findings →
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 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 →