27,380 Alzheimer's and dementia studies in plain English, each scored out of 100.
Exposure to the highest quintile of PM 2·5 (Rte:1·14, 95% CI:1·06-1·23), NO x (Rte:1·11, 95% CI:1·03-1·20) or NO 2 (Rte:1·08, 95% CI:0·99-1·16), compared to the lowest quintile, was associated with higher dementia risk. 2 key findings →
Evidence: high
Full summary, score breakdown and related studies → Original source
Ambient air pollution has been associated with increased incidence of chronic disease and is estimated to contribute towards 4.2 million early deaths annually. 2 key findings →
Participants: 22,071 Evidence: low
Full summary, score breakdown and related studies → Original source
Direct medical and productivity-related costs associated with incident cases were estimated using a cost-of-illness (COI) framework. 4 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
The Middle East and North Africa (MENA) region represents the area of greatest projected growth in instances of Alzheimer’s disease and related dementias (ADRDs) globally, yet, it remains virtually uncharacterized in health studies of aging and ADRDs. 4 key findings →
Participants: 3,552 Evidence: low
Full summary, score breakdown and related studies → Original source
In this prospective birth cohort study, prenatal exposure to a persistent environmental toxicant was associated with lower plasma Aβ42/40 ratio and worse cognitive performance in midlife, consistent with DDE accelerating the preclinical trajectory of AD-related biological changes decades before symptom onset. 5 key findings →
Design: cohort study Participants: 179 Evidence: moderate
Full summary, score breakdown and related studies → Original source
Air pollution (AirP) exposure is associated with increased Alzheimer’s disease (AD) risk, yet AirP is chemically heterogeneous, complicating identification of shared pathogenic drivers. 2 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
Alzheimer’s disease (AD) involves widespread metabolic, mitochondrial, inflammatory, and redox dysfunction. 1 key finding →
Evidence: low
Full summary, score breakdown and related studies → Original source
However, increasing evidence indicates that systemic metabolic dysfunction, chronic inflammation, intestinal dysbiosis, hepatic abnormalities, and barrier impairment may substantially influence disease susceptibility and progression. 1 key finding →
Design: longitudinal study Evidence: moderate
Full summary, score breakdown and related studies → Original source
Alzheimer’s Disease (AD) is characterised by the progressive depletion of Acetylcholine (ACh), a neurotransmitter essential for cognition and synaptic communication. 2 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
Among 1,288,359 women, 20,070 with AUD were matched to 100,339 controls. 3 key findings →
Design: prospective cohort Evidence: moderate
Full summary, score breakdown and related studies → Original source
Central Nervous System (CNS) hyperexcitability is increased during aging and also during alcohol withdrawal. 1 key finding →
Evidence: low
Full summary, score breakdown and related studies → Original source
Metabotropic glutamate receptors (mGluRs) regulate glutamatergic transmission and have been implicated in diverse neuropsychiatric disorders, but human postmortem evidence remains fragmented. 1 key finding →
Evidence: low
Full summary, score breakdown and related studies → Original source
The 2,885 participants had a mean age of 69.5 years. 4 key findings →
Design: longitudinal study Participants: 2,885 Evidence: moderate
Full summary, score breakdown and related studies → Original source
Rhabdomyolysis is a common syndrome involving the breakdown of muscle tissue. 5 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
Neuroticism, a personality trait characterized by the predisposition to experience intense and frequent negative emotions, has been associated with an increased risk of Alzheimer’s disease (AD). 5 key findings →
Participants: 1,277 Evidence: low
Full summary, score breakdown and related studies → Original source
Electronic health records linked documented glucosamine use to faster progression from mild cognitive impairment (MCI) to Alzheimer’s disease (AD) and poorer survival after dementia. 2 key findings →
Evidence: moderate
Full summary, score breakdown and related studies → Original source
INTRODUCTIONLittle is understood about the extent to which lifestyle factors can advance or delay the risk of developing dementia, and whether that is dependent on non-modifiable factors, e.g. sex and genetic susceptibility.METHODSAmong 224,516 UK Biobank participants aged ≥50 years at baseline, Cox regression examined the relations of apolipoprotein E gene (APOE) genotypes, and lifestyle with incident dementia. 3 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
Dementia is a progressive condition that impairs cognitive processes such as memory, decision-making, and the ability to manage daily activities. 3 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
DMII provides a metabolomics-based framework for assessing diet-related chronic inflammation using metabolomics data. 4 key findings →
Evidence: moderate
Full summary, score breakdown and related studies → Original source
Microglial activation and FR expression in APP/PS1 and P301S transgenic mouse models of AD was measured using flow cytometry. 5 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
Microglial activation and subsequent neuroinflammation involves THIK-1 (KCNK13), a Two-Pore Domain (K2P) K+ channel. 1 key finding →
Evidence: low
Full summary, score breakdown and related studies → Original source
This method establishes a platform for high-throughput longitudinal drug screening in immunocompetent human COs that will enable the identification of new therapeutic candidates to modulate Aβ aggregation, glial reactivity, and neurodegeneration. 5 key findings →
Design: longitudinal study Evidence: moderate
Full summary, score breakdown and related studies → Original source
At the group level, the resting alpha abnormality in AD comprises two partly nonredundant dimensions: reduced expression and a weaker temporal link between alpha and subsequent multi-rhythm activity. 1 key finding →
Participants: 36 Evidence: low
Full summary, score breakdown and related studies → Original source
Neurodegenerative diseases are a growing global health burden associated with aging and characterized by progressive neuronal dysfunction, metabolic failure, mitochondrial impairment, oxidative stress, and chronic neuroinflammation. 1 key finding →
Design: narrative review Evidence: low
Full summary, score breakdown and related studies → Original source
Together, these findings identify astrocytic TrkB.T as an important regulator of amyloid pathology and synaptic integrity in an AD mouse model. 4 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 →