27,780 Alzheimer's and dementia studies in plain English, each scored out of 100.
This review discusses the research published in the last five years on the behavioral, genetic, medical, and neuroscience aspects of Down syndrome. 2 key findings →
Evidence: low
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Down's syndrome (DS) is characterized by several pathological aspects leading to an increased susceptibility to cardiovascular diseases, infections, leukemia, endocrine alterations. 1 key finding →
Evidence: low
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It is a well established fact that Down Syndrome (DS) individuals have a tendency to develop Alzheimer's disease (AD) (Lott, I.T., Head, E., 2005. 4 key findings →
Evidence: low
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The precise regulation of DSCR gene expression is crucial to maintain the brain homeostasis, especially in those areas with high levels of gene expression associated with a remarkable process of learning and cognition. 3 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Down syndrome (DS) is one of the most common genetic diseases. 4 key findings →
Evidence: low
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Complex interactions and interconnectivity between neurons are hallmarks of normal neuronal differentiation and development. 1 key finding →
Evidence: low
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How do clinicians distinguish early-stage dementia from the expected cognitive variability seen in ageing adults with Down syndrome? 2 key findings →
Participants: 72 Evidence: low
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Down syndrome (trisomy 21) is the most common genetic cause of intellectual disability. 1 key finding →
Design: narrative review Evidence: low
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For these neurodegenerative dementias, we observed that the chronological age did not align with their biological age, which was determined based on hippocampal transcript levels (i.e., transcriptional age). 3 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Down syndrome (DS) is a chromosomal abnormality (trisomy 21) associated with mental retardation and Alzheimer-like dementia, characteristic change of the individual's phenotype and premature ageing. 4 key findings →
Evidence: low
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In persons with Down syndrome, soluble Abeta peptides, which result from the processing of the amyloid precursor protein, appear in the brain decades before the extracellular deposition of neuritic plaques. 3 key findings →
Evidence: low
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Down syndrome, trisomy of chromosome 21, is well investigated because it is a genetic disease with characteristic mental retardation and precocious dementia of Alzheimer type. 4 key findings →
Evidence: low
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The occurrence of +1 frameshifted proteins, such as amyloid precursor protein (APP+1) and ubiquitin-B (UBB+1) in Down syndrome (DS) has been linked to the onset of Alzheimer's disease (AD). 1 key finding →
Evidence: low
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Inositol monophosphatase (IMPase), a cytoplasmic enzyme that hydrolyses inositol monophosphates to produce inositol is also found in the cerebrospinal fluid (CSF). 4 key findings →
Evidence: low
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Gene dysregulation in trisomy 21 can cause disorders of genes that are members of the heat-shock proteins (HSPs) family and contribute to the early onset of Alzheimer's disease (AD) in Down syndrome (DS). 2 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Down syndrome (DS), caused by trisomy of chromosome 21, is characterized by early-onset oxidative stress, impaired neuronal development, and an increased risk of Alzheimer's disease (AD)-like neuropathology. 2 key findings →
Evidence: low
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Oxidative stress in DS is associated with neurodevelopmental defects, neuronal dysfunction, and the onset of dementia re-sembling Alzheimer's disease. 4 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Our study is the first one showing that dietary supplements improve cognition and sleep in a mouse model of DS. 1 key finding →
Evidence: low
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Down syndrome, or trisomy 21, is the most common chromosomal abnormality associated with intellectual impairment. 1 key finding →
Evidence: low
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The patients were at stage V of sexual development. 4 key findings →
Evidence: low
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Neuropsychologic tests were performed in subjects with Down syndrome in order to assess the effect of a 90-day treatment with L-acetyl-carnitine (LAC). 3 key findings →
Evidence: low
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A blind study was set up to examine the in vitro growth characteristics of skin fibroblasts from 2 individuals with and 9 at risk for familial Alzheimer disease, 4 individuals with sporadic Alzheimer disease, 18 with Down syndrome as well as 5 younger and 6 older controls. 5 key findings →
Evidence: low
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Plasma homocysteine value proved to be lower in 7 of the 30 and higher in 6 of the 30 patients studied than the reference range. 3 key findings →
Participants: 30 Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Numerous intraneuronal neurofibrillary tangles and senile (neuritic) plaques are the two characteristic lesions in Alzheimer disease (AD) and adult Down syndrome (DS). 4 key findings →
Evidence: low
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Down syndrome (DS) is the most common chromosomal aberration and genetically determined cause of intellectual disability. 2 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
9 of the 536 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 →