Hypothyroidism and subclinical hyperthyroidism have both been associated with cognitive impairment and dementia. 4 key findings →
Participants: 1,047 Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
28,980 Alzheimer's and dementia studies in plain English, each scored out of 100.
Hypothyroidism and subclinical hyperthyroidism have both been associated with cognitive impairment and dementia. 4 key findings →
Participants: 1,047 Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
TAR DNA-binding protein (TDP-43) has been recently described as a major pathological protein in both frontotemporal dementia with ubiquitin-positive inclusions (FTLD-U) and amyotrophic lateral sclerosis. 4 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Elevation of the proinflammatory cytokine Interleukin-1 (IL-1) is an integral part of the local tissue reaction to central nervous system (CNS) insult. 4 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Surrogates were accurate in the majority of cases, made errors in 12% to 22% of cases, and were uncertain in 11% to 16% of cases. 4 key findings →
Design: longitudinal study Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
Among mild to moderate AD patients, enrolled in an actual clinical trial, these results suggest evidence based guidelines for using the MacCAT-CR understanding subscale to help guide judgments about whether a patient has the capacity to consent. 3 key findings →
Design: cross-sectional Evidence: high
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Lesions of the cerebral white matter (WM) result in focal neurobehavioral syndromes, neuropsychiatric phenomena, and dementia. 3 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Braak and colleagues have proposed that, within the central nervous system, Parkinson's disease (PD) begins as a synucleinopathy in nondopaminergic structures of the lower brainstem or in the olfactory bulb. 1 key finding →
Evidence: low
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Increased total and periventricular (PV) white matter hyperintensity (WMH) burden and progression of PV WMH burden are associated with decreased gait performance over time, while progression of subcortical WMH volume is associated with memory decline in cognitively intact elderly. 5 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
This study enrolled 184 middle-aged and older women (95 Non-Hispanic White and 89 Hispanic/Latino) who provided in-home hands-on care to an elderly relative with Alzheimer's disease or another form of dementia. 4 key findings →
Participants: 184 Evidence: low
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The PRISM-PC questionnaire captures primary care patients' acceptance, perceived harms, and perceived benefits of dementia screening. 2 key findings →
Design: cross-sectional Participants: 315 Evidence: low
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Accurate detection and classification of aspiration is a critical component of videofluoroscopic swallowing evaluation, the most commonly utilized instrumental method for dysphagia diagnosis and treatment. 4 key findings →
Participants: 669 Evidence: high
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Endocytic dysfunction is an early pathological change in Alzheimer's disease (AD) and Down's syndrome (DS). 3 key findings →
Evidence: low
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The etiologies of neurodegenerative diseases may be diverse; however, a common pathological denominator is the formation of aberrant protein conformers and the occurrence of pathognomonic proteinaceous deposits. 1 key finding →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
The presenilin/gamma-secretase complex, an unusual intramembrane aspartyl protease, plays an essential role in cellular signaling and membrane protein turnover. 4 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
TAR DNA binding protein-43 (TDP-43) is found in ubiquitinated inclusions (UBIs) in some frontotemporal dementias (FTD-U). 4 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Simple MRI biomarkers, in addition to their diagnostic use, have a prognostic value with respect to mortality in a memory clinic population. 2 key findings →
Participants: 220 Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Accumulation of senile plaques composed of amyloid beta-peptide (Abeta) is a pathological hallmark of Alzheimer disease (AD), and Abeta is generated through the sequential cleavage of amyloid precursor protein (APP) by beta- and gamma-secretase. 4 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Alzheimer's disease (AD) is a progressive neurodegenerative disorder that destroys patient memory and cognition, communication ability with the social environment and the ability to carry out daily activities. 4 key findings →
Design: open-label trial Participants: 43 Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Alzheimer's disease is the commonest dementia. 4 key findings →
Evidence: low
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Cognitively normal subjects with HTN (n=19) had decreased rCBF in the putamen, globus pallidus, bilaterally, and in the left hippocampus compared with normotensives (n=22). 1 key finding →
Participants: 19 Evidence: low
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The present study indicated that most individuals with the comorbidity of epilepsy and dementia have complex partial seizures that may be adequately controlled on AED therapy. 4 key findings →
Participants: 63 Evidence: low
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This article outlines methodological enhancements to better evaluate treatment approaches in future registration trials and provides an algorithm for improving the treatment of these patients in nursing home and non-nursing home settings. 3 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
On November 8-9, 2007, a meeting entitled "Setting a Public Health Research Agenda for Down Syndrome" was held to review current knowledge, identify gaps, and develop priorities for future public health research related to Down syndrome. 5 key findings →
Design: longitudinal study Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
The colonic epithelial lining undergoes constant replacement, driven by epithelial stem cells in crypts of Lieberkühn. 4 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Inflammation is associated with Abeta pathology in Alzheimer's disease (AD) and transgenic AD models. 4 key findings →
Participants: 29 Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
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.
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 28,980 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 28,980 records, built mostly from automated pulls of Europe PMC (62.8% of the library) and OpenAlex (17.6%), 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.
1,038 records (3.6% of the library) are not peer-reviewed — 966 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 →