Mild cognitive impairment (MCI) is considered as a transition phase between normal aging and Alzheimer's disease (AD). 3 key findings →
Participants: 46 Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
27,380 Alzheimer's and dementia studies in plain English, each scored out of 100.
Mild cognitive impairment (MCI) is considered as a transition phase between normal aging and Alzheimer's disease (AD). 3 key findings →
Participants: 46 Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
This study aims to assess the burden of young-onset dementia worldwide, regionally, and nationally during 1990-2021. 5 key findings →
Participants: 100,000 Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
Accumulating research has linked Mediterranean diet (MeDi) adherence with slower cognitive decline and reduced Alzheimer's disease (AD) risk. 4 key findings →
Participants: 77 Evidence: moderate
Full summary, score breakdown and related studies → Original source
Plasma biomarkers have shown promising performance in research cohorts in discriminating between different stages of Alzheimer's disease (AD). 2 key findings →
Participants: 75 Evidence: moderate
Full summary, score breakdown and related studies → Original source
Alzheimer's disease (AD) is the most common dementia in the elderly. 4 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Clinical studies have shown alterations in metabolic profiles when patients with mild cognitive impairment and Alzheimer's disease dementia were compared to cognitively normal subjects. 4 key findings →
Participants: 1,534 Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Late-life depression has been consistently associated with lower gray matter volume, the origin of which remains largely unexplained. 4 key findings →
Participants: 24 Evidence: low
Full summary, score breakdown and related studies → Original source
Multimorbidity (the presence of two or more long-term conditions [LTCs]) was suggested to exacerbate the neuronal injuries. 4 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Exposure to maternal anxiety predicts offspring brain development. 1 key finding →
Participants: 175 Evidence: low
Full summary, score breakdown and related studies → Original source
Shifting policies towards legalisation of cannabis for therapeutic and recreational use raise significant ethical issues for health-care providers seeking evidence-based recommendations. 4 key findings →
Participants: 111 Evidence: low
Full summary, score breakdown and related studies → Original source
Using three decades of global health data, this study tracked how young-onset dementia (before age 65) has changed since 1990. 5 key findings →
Design: modelling Evidence: moderate
Full summary, score breakdown and related studies → Original source
Neuroplasticity may have a core role in the pathophysiology of major depressive disorder (MDD), a concept supported by experimental studies that found that excessive cortisol secretion and/or excessive production of inflammatory cytokines impairs neuronal plasticity and neurogenesis in the hippocampus. 3 key findings →
Participants: 40 Evidence: low
Full summary, score breakdown and related studies → Original source
To determine whether apparent involvement of DYRK1A in Alzheimer's disease (AD) pathology makes it a candidate plasma biomarker for diagnosis, we developed a method to quantify plasma DYRK1A by immunoblot in transgenic mouse models having different gene dosages of Dyrk1a, and, consequently, different relative protein expression. 4 key findings →
Participants: 26 Evidence: low
Full summary, score breakdown and related studies → Original source
The aim of this study was to explore concentrations differences of soluble amyloid precursor protein (sAPP) α and β in blood plasma in patients with probable Alzheimer's disease (AD) and cognitively healthy age-matched control subjects, as well as patients with behavioural variant frontotemporal dementia (bvFTD). 2 key findings →
Participants: 80 Evidence: low
Full summary, score breakdown and related studies → Original source
Alzheimer's disease (AD) is the most common neurodegenerative disorder causing huge emotional and economic burden to our societies. 5 key findings →
Evidence: moderate
Full summary, score breakdown and related studies → Original source
Mild cognitive impairment (MCI) is an early stage in the progression toward dementia. 1 key finding →
Design: longitudinal study Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
Mild behavioral impairment (MBI) is suggested as risk marker for neurodegenerative diseases, such as Alzheimer's disease (AD). 2 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
Metformin, a primary anti-diabetic medication, has been anticipated to provide benefits for Alzheimer's disease (AD), also known as "type 3 diabetes". 4 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
The expression of the triggering receptor on myeloid cell-2 (TREM2) knockdown in microglia from the lateral habenula (LHb) reportedly induces depression-like behaviors in mice. 4 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Frontotemporal dementia is a debilitating neurodegenerative disorder characterized by frontal and temporal lobe degeneration, resulting in behavioral changes, language difficulties, and cognitive decline. 2 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Mutations in the microtubule-associated protein tau (MAPT) gene cause autosomal dominant frontotemporal lobar degeneration with tau inclusions (FTLD-tau). 4 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
Alzheimer's disease (AD) represents a major healthcare burden with no effective treatment. 2 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
Alzheimer's disease (AD) is a progressive neurodegenerative disease associated with a complex genetic etiology. 3 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
Presenilin (PS) with a genetic mutation generates abundant β-amyloid protein (Aβ) 43. 3 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
Single, severe traumatic brain injury (TBI) which elevates CNS amyloid, increases the risk of Alzheimer's disease (AD); while repetitive concussive and subconcussive events as observed in athletes and military personnel, may increase the risk of chronic traumatic encephalopathy (CTE). 2 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
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 27,380 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 27,380 records, built mostly from automated pulls of Europe PMC (60.6% of the library) and OpenAlex (18.6%), 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.
1,032 records (3.8% 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 →