A number of factors, including physical activity, may contribute to prevention of cognitive decline and delay the onset of dementia. 3 key findings →
Evidence: high
Full summary, score breakdown and related studies → Original source
28,580 Alzheimer's and dementia studies in plain English, each scored out of 100.
A number of factors, including physical activity, may contribute to prevention of cognitive decline and delay the onset of dementia. 3 key findings →
Evidence: high
Full summary, score breakdown and related studies → Original source
Cortisol, a critical glucocorticoid hormone produced by the adrenal glands, plays a pivotal role in various physiological processes. 2 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
Previous studies showed circadian rhythm disturbances in patients with Alzheimer's disease. 3 key findings →
Participants: 34 Evidence: low
Full summary, score breakdown and related studies → Original source
In older men, pathways occurred from chronic stress to distress to the metabolic syndrome, which in turn predicted CHD. 1 key finding →
Participants: 47 Evidence: low
Full summary, score breakdown and related studies → Original source
These data indicate that Alzheimer's disease causes disturbances of circadian rhythms and that sundowning is related to a phase delay of body temperature caused by Alzheimer's disease. 3 key findings →
Participants: 25 Evidence: low
Full summary, score breakdown and related studies → Original source
Light is known to be an important modulator of circadian rhythms. 2 key findings →
Participants: 22 Evidence: low
Full summary, score breakdown and related studies → Original source
The pathological findings of corticobasal degeneration are associated with several distinct clinical syndromes, and the corticobasal syndrome has been linked with a number of diverse pathologies. 2 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
Oxidative stress plays an important role in the development of aging-related diseases by accelerating the lipid peroxidation of polyunsaturated fatty acids in the cell membrane, resulting in the production of aldehydes, such as malondialdehyde and 4-hydroxy-2-nonenal (4-HNE) and other toxic substances. 4 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
Depressive symptoms have been reported in patients with mild to moderate Alzheimer's disease (AD). 3 key findings →
Participants: 52 Evidence: low
Full summary, score breakdown and related studies → Original source
Although a causal association remains to be determined, epidemiologic evidence suggests an association between hearing loss and increased risk of dementia. 2 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
Presenilin-1 (PSEN1) has been verified as an important causative factor for early onset Alzheimer's disease (EOAD). 2 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
Alzheimer's disease (AD) has long been recognized as a heterogeneous illness, with a common clinical presentation of progressive amnesia and less common "atypical" clinical presentations, including syndromes dominated by visual, aphasic, "frontal," or apraxic symptoms. 5 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
Raising awareness of this unique disability is imperative to insure that individuals receive the necessary rehabilitation and supportive services to improve their level of independence and quality of life. 2 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
Increased levels of ROS/RNS, generated from both endogenous (mitochondria, NADPH oxidases) and/or exogenous sources (radiation, certain drugs, foods, cigarette smoking, pollution) result in a harmful condition termed oxidative stress ("bad stress"). 1 key finding →
Evidence: low
Full summary, score breakdown and related studies → Original source
The National Adult Reading Test (NART) is widely used as a measure of premorbid IQ of the English-speaking patients with dementia. 1 key finding →
Participants: 50 Evidence: low
Full summary, score breakdown and related studies → Original source
Hereditary diffuse leukoencephalopathy with spheroids (HDLS) is an autosomal-dominant central nervous system white-matter disease with variable clinical presentations, including personality and behavioral changes, dementia, depression, parkinsonism, seizures and other phenotypes. 2 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
Inflammation is a natural protective mechanism that occurs when the body's tissue homeostatic mechanisms are disrupted by biotic, physical, or chemical agents. 2 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
Fine particulate matter (PM2.5), a major component among air pollutants, highlights as a global health concern. 2 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
The increasing amount of particulate matter (PM) in the ambient air is a pressing public health issue globally. 2 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
Neurodegeneration leads to the loss of structural and functioning components of neurons over time. 1 key finding →
Evidence: low
Full summary, score breakdown and related studies → Original source
Environmental factors, including pesticides, have been linked to autism and neurodegeneration risk using retrospective epidemiological studies. 1 key finding →
Evidence: low
Full summary, score breakdown and related studies → Original source
The aging population worldwide is facing a significant increase in age-related non-communicable diseases, including cardiovascular and brain pathologies. 3 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
Respirable fine particulate matter (PM 2.5 ) has been one of the most widely publicized indicators of pollution in recent years. 1 key finding →
Evidence: low
Full summary, score breakdown and related studies → Original source
These data demonstrate that chronic exposure to ambient TRAP promoted AD phenotypes in wildtype and genetically susceptible rats. 4 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
Air pollution is regarded as an important risk factor for many diseases that affect a large proportion of the human population. 1 key finding →
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 28,580 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 28,580 records, built mostly from automated pulls of Europe PMC (62.2% of the library) and OpenAlex (17.8%), 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 (3.6% 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 →