Unlike neurologic conditions, such as brain tumors, dementia, and stroke, the neural mechanisms for all psychiatric disorders remain unclear. 3 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
Research
28,180 Alzheimer's and dementia studies in plain English, each scored out of 100.
Phase-contrast magnetic resonance imaging (PC-MRI) is a noninvasive reliable technique, which enables quantification of cerebrospinal fluid (CSF) and total cerebral blood flows (tCBF). 4 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
The ABILHAND questionnaire results in a valid person-centered measure of manual ability in everyday activities. 5 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
This review summarizes recent developments that have contributed to understand how adenosine receptors, particularly A2A receptors, modulate brain injury in various animal models of neurological disorders, including Parkinson's disease (PD), stroke, Huntington's disease (HD), multiple sclerosis, Alzheimer's disease (AD) and HIV-associated dementia. 1 key finding →
Evidence: low
Full summary, score breakdown and related studies → Original source
Several studies report that blood pressure is increased in victims of Alzheimer's disease (AD) decades before the onset of the disease. 1 key finding →
Evidence: low
Full summary, score breakdown and related studies → Original source
The extracellular matrix (ECM) is known to regulate important processes in neuronal cell development, activity and growth. 1 key finding →
Evidence: low
Full summary, score breakdown and related studies → Original source
The close relationship between stroke and dementia is an important health issue. 1 key finding →
Evidence: low
Full summary, score breakdown and related studies → Original source
Brain vasculature is a complex and interconnected network under tight regulatory control that exists in intimate communication with neurons and glia. 1 key finding →
Evidence: low
Full summary, score breakdown and related studies → Original source
There was also evidence to suggest that the strengths and weaknesses of each method were considered when applying a method to a specific illness. 1 key finding →
Evidence: low
Full summary, score breakdown and related studies → Original source
Neurospectroscopy measures a neuronal marker, energy and redox state, specific fuels of tissue respiration, maturation, and possibly myelination. 5 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
Memantine is also reported to have beneficial effects in other CNS disorders viz., Parkinson's disease (PD), stroke, epilepsy, CNS trauma, amyotrophic lateral sclerosis (ALS), drug dependence and chronic pain. 5 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
Notch signaling is critically important for proper architecture of the vascular system, and mutations in NOTCH3 are associated with CADASIL, a stroke and dementia syndrome with vascular smooth muscle cell (VSMC) dysfunction. 2 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
Vascular cognitive impairment (VCI) was proposed as an umbrella term to include subjects affected with any degree of cognitive impairment resulting from cerebrovascular disease (CVD), ranging from mild cognitive impairment (MCI) to vascular dementia. 3 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
Semantic cognition--semantically driven verbal and nonverbal behavior--is composed of at least two interactive principal components: conceptual representations and executive control processes that regulate and shape activation within the semantic system. 4 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
In contrast to many years of important research and clinical attention to the pathological effects of alcohol (ethanol) abuse, the past several decades have seen the publication of a number of peer-reviewed studies indicating the beneficial effects of light-moderate, nonbinge consumption of varied alcoholic beverages, as well as experimental demonstrations that moderate alcohol exposure can initiate typically cytoprotective mechanisms. 4 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
Glutamate transport is central to neurotransmitter functions in the brain. 2 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
These differences in clinical features suggest a different pathogenesis of parkinsonism in these 2 patient groups. 4 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
N-Methyl-D-aspartate (NMDA) receptors are tetrameric ion channels containing two of four possible GluN2 subunits. 5 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
Cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy (CADASIL) is a hereditary cerebrovascular disease leading to cognitive decline and dementia. 1 key finding →
Evidence: low
Full summary, score breakdown and related studies → Original source
Nursing home residence is by far the most prominent association with fecal incontinence, with a prevalence approaching 50%. 2 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
Initial recruitment of leukocytes in inflammation associated with diseases such as multiple sclerosis (MS), ischemic stroke, and HIV-related dementia, takes place across intact, but activated brain endothelium. 1 key finding →
Evidence: low
Full summary, score breakdown and related studies → Original source
36/100
The elderly are the most rapidly growing population group in the world. 1 key finding →
Evidence: low
Full summary, score breakdown and related studies → Original source
Interest in dementia has increased over the past few decades. 3 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
Our current understanding of nitric oxide (NO), cyclic GMP (cGMP) and protein kinase G (PKG) signaling pathways in the nervous systems has its origins in the early studies conducted on vascular tissues during the late 1970s and early to mid-1980s. The pioneering research into the NO/cGMP/PKG pathway in blood vessels conducted by the laboratories of Drs. 1 key finding →
Evidence: low
Full summary, score breakdown and related studies → Original source
36/100
The current investigation compared neuropsychological test performance among nondemented literate and illiterate elders. 4 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
Where “Free full text” comes from
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
How the 0–100 score works — and why some entries are capped
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.
- Journal tier up to 10 pts
- Journal's citation record up to 4 pts
- Study design up to 12 pts
- Strength of evidence up to 5 pts
- Peer-review validation up to 10 pts
- How recent up to 5 pts
- Sample size up to 4 pts
- Effect reported up to 3 pts
- Studied in people up to 3 pts
- Randomised / blinded up to 2 pts
- Times cited up to 7 pts
- Citations per year up to 5 pts
- Impact for its field and year up to 6 pts
- Cited by studies here up to 6 pts
- Still being cited up to 4 pts
- Senior author's track record up to 4 pts
- Institution's track record up to 3 pts
- Multi-centre collaboration up to 3 pts
- Indexed in PubMed up to 2 pts
- Free to read up to 2 pts
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.
What this library is — and isn't
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 →