39/100
During the follow-up, we identified 159 incident dementia or CIND cases in total. 5 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
Research
27,380 Alzheimer's and dementia studies in plain English, each scored out of 100.
The vast majority of neurodegenerative disease cannot be attributed to genetic causes alone and as a result, there is significant interest in identifying environmental modifiers of disease risk. 3 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
Epidemiological studies are associating elevated exposure to air pollution with increased risk of Alzheimer's disease and other neurodegenerative disorders. 1 key finding →
Evidence: low
Full summary, score breakdown and related studies → Original source
Engagement in green spaces impacts positively on wellbeing and quality of life. 2 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
39/100
Alzheimer's disease (AD), an aging-related neurodegenerative disease, is a major cause of dementia in the elderly. 1 key finding →
Evidence: low
Full summary, score breakdown and related studies → Original source
RECENT FINDINGS: Specific dietary patterns and varied nutrient combinations can have a protective effect on brain health, promote cognitive function, and mediate the comorbidity of chronic conditions associated with increased AD risk. 1 key finding →
Evidence: low
Full summary, score breakdown and related studies → Original source
The prevention or alleviation of neurodegenerative diseases, including Alzheimer's disease (AD), is a challenge for contemporary health services. 5 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
Alzheimer's Disease (AD) incidence is increasing and with no disease modifying agents available, preventative measures through lifestyle factors are being investigated. 5 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
Although it is clear that nutrition affects physical and metabolic functions in humans, the importance of nutrition in mental illness has often been overlooked. 1 key finding →
Evidence: low
Full summary, score breakdown and related studies → Original source
Sporadic late-onset Alzheimer disease (LOAD) preceded by mild cognitive impairment (MCI) is the most common type of dementia. 5 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
As one of the most harmful air pollutants, fine particulate matter (PM2.5) has been implicated as a risk factor for multiple diseases, which has generated widespread public concern. 1 key finding →
Evidence: low
Full summary, score breakdown and related studies → Original source
Locus Coeruleus (LC) is the main noradrenergic nucleus of the central nervous system, and its neurons widely innervate the whole brain. 1 key finding →
Evidence: low
Full summary, score breakdown and related studies → Original source
Aging is characterized by a chronic low-grade sterile inflammation dubbed as inflammaging, which in part originates from accumulating cellular debris. 1 key finding →
Evidence: low
Full summary, score breakdown and related studies → Original source
Neurodegenerative diseases are neuronal disorders characterized by the loss of a large number of neurons in the human brain. 5 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
39/100
Amyloid plaques, mainly composed of abnormally aggregated amyloid β-protein (Aβ) in the brain parenchyma, and neurofibrillary tangles (NFTs), consisting of hyperphosphorylated tau protein aggregates in neurons, are two pathological hallmarks of Alzheimer's disease (AD). 3 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
Alzheimer's disease (AD), the most common cause of dementia, is a neurodegenerative disease that seriously threatens human health and life quality. 1 key finding →
Evidence: low
Full summary, score breakdown and related studies → Original source
Alzheimer's disease is characterized by the accumulation of amyloid and dysfunctional tau protein in the brain along with the final development of dementia. 1 key finding →
Evidence: low
Full summary, score breakdown and related studies → Original source
In the first part, we introduce the GBA and its relevance, followed by the changes occurring in the GBA during neurodegenerative disorders and then further discuss its role in the pathogenesis of these diseases. 3 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
Common themes in the current literature include GMB components; interactions on cognitive development; effects of GMB-gut-brain interactions on cognition, mild cognitive impairment and Alzheimer's disease; effects of GMB interactions with physiologic stress on cognition in critical care; and GMB modification for improved cognition. 4 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
Opioid drugs are widely used to treat chronic pain, but their misuse can lead to tolerance, dependence, and addiction and have created a significant public health problem. 2 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
The purpose of this article is to highlight how sex differences in the gut-brain axis may contribute to the discrepancies in incidence of neurodevelopmental, psychiatric, and neurodegenerative disorders between females and males. 5 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
Cerebral amyloid angiopathy (CAA), one of the main types of cerebral small vessel disease, is a major cause of spontaneous intracerebral haemorrhage and an important contributor to cognitive decline in elderly patients. 5 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
The arteriosclerosis-dependent alteration of brain perfusion is one of the major determinants in small vessel disease, since small vessels have a pivotal role in the brain's autoregulation. 5 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
A new study suggests that the leading genetic risk factor for Alzheimer's disease, apolipoprotein E4 (APOE4), is linked to blood-brain barrier breakdown and subsequent cognitive decline. 2 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
Cerebral small vessel disease (SVD) refers to a group of disease conditions affecting the cerebral small vessels, which include the small arteries, arterioles, capillaries, and postcapillary venules in the brain. 1 key finding →
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 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.
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 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 →