27,780 Alzheimer's and dementia studies in plain English, each scored out of 100.
[18F]Flutemetamol and [18F]florbetaben data demonstrated an increased bias in amyloid estimate for larger intervals and higher noise levels. 5 key findings →
Design: longitudinal study Evidence: moderate
Full summary, score breakdown and related studies → Original source
Alzheimer's Disease (AD) is a progressive neurodegenerative disease and the leading cause of dementia. 1 key finding →
Design: longitudinal study Evidence: moderate
Full summary, score breakdown and related studies → Original source
The mean age of 35,570 new users of cholinesterase inhibitors (30,174 users of donepezil, 1,176 users of galantamine, 4,220 users of rivastigmine) was 82; 75% were women, and 82% were white. 5 key findings →
Design: cohort study Evidence: moderate
Full summary, score breakdown and related studies → Original source
Baseline pRBD was associated with faster decline in global cognition and all cognitive domains, including verbal episodic memory, visuospatial ability, executive function, language, and processing speed. 5 key findings →
Design: longitudinal study Evidence: moderate
Full summary, score breakdown and related studies → Original source
Numerous longitudinal studies suggest a strong association between cardiovascular risk factors and cognitive impairment. 1 key finding →
Design: longitudinal study Evidence: moderate
Full summary, score breakdown and related studies → Original source
The global rise in both metabolic syndrome (MetS) and neurodegenerative diseases (NDs), particularly dementia and Alzheimer's disease (AD) poses a growing health and socioeconomic burden. 1 key finding →
Design: longitudinal study Evidence: moderate
Full summary, score breakdown and related studies → Original source
To investigate the correlation between hypertension development and the progression of mild cognitive impairment (MCI) to dementia in middle-aged and elderly people. 2 key findings →
Design: longitudinal study Evidence: moderate
Full summary, score breakdown and related studies → Original source
Previous studies have demonstrated resilience to AD-related neuropathology in a form of cognitive reserve (CR). 4 key findings →
Design: longitudinal study Evidence: moderate
Full summary, score breakdown and related studies → Original source
Depression and dementia are both common conditions in older people, and they frequently occur together. 5 key findings →
Design: longitudinal study Evidence: moderate
Full summary, score breakdown and related studies → Original source
Higher synaptic latent factor (β = - 0.019, pFDR = 0.021) and YKL-40 (β = - 0.020, pFDR = 0.025) significantly predicted hippocampal atrophy. 5 key findings →
Design: longitudinal study Evidence: moderate
Full summary, score breakdown and related studies → Original source
The microbiota-gut-brain axis (MGBA) is an intricate bidirectional communication network that links intestinal microbiota with the central nervous system (CNS) through immune, neural, endocrine, and metabolic pathways. 2 key findings →
Design: longitudinal study Evidence: moderate
Full summary, score breakdown and related studies → Original source
An initial database search yielded 3,977 studies of which 22 were included in this review. 5 key findings →
Design: longitudinal study Evidence: moderate
Full summary, score breakdown and related studies → Original source
Out of 50,089 LTC residents, 12.1% retained their family physicians post-LTC admission. 5 key findings →
Design: cohort study Evidence: moderate
Full summary, score breakdown and related studies → Original source
Later birth year was associated with higher initial cognitive levels for Whites and Blacks, but not Hispanics. 5 key findings →
Design: cohort study Evidence: moderate
Full summary, score breakdown and related studies → Original source
Brain amyloid deposition is thought to be a seminal event in Alzheimer’s disease. 2 key findings →
Design: longitudinal study Evidence: moderate
Full summary, score breakdown and related studies → Original source
There is considerable debate whether Alzheimer's disease (AD) originates in basal forebrain or entorhinal cortex. 1 key finding →
Design: longitudinal study Evidence: moderate
Full summary, score breakdown and related studies → Original source
Promoting successful cognitive aging is a topic of major importance to individuals and the field of public health. 5 key findings →
Design: cohort study Evidence: high
Full summary, score breakdown and related studies → Original source
Irreversible dementia developed significantly more frequently in the depressed group with reversible dementia (43%) than in the group with depression alone (12%). 5 key findings →
Design: longitudinal study Participants: 23 Evidence: moderate
Full summary, score breakdown and related studies → Original source
Diagnosis of AD was associated inversely with FTI by itself and after adjustments for age, education, smoking status, body mass index, diabetes, any cancer diagnoses, and hormone supplements. 5 key findings →
Design: longitudinal study Evidence: moderate
Full summary, score breakdown and related studies → Original source
Further, we do not know if ACP uptake is greater among those in worse health and with poorer prognoses. 5 key findings →
Design: cohort study Evidence: moderate
Full summary, score breakdown and related studies → Original source
Delirium is a complex clinical syndrome characterised by disturbed consciousness, cognitive function, or perception. 1 key finding →
Design: cohort study Evidence: moderate
Full summary, score breakdown and related studies → Original source
Little is known whether cerebrospinal fluid (CSF) biomarkers of Alzheimer's disease (AD) can predict both memory decline and associated longitudinal medial temporal lobe (MTL) gray matter (GM) reductions in cognitively healthy individuals. 2 key findings →
Design: longitudinal study Participants: 57 Evidence: moderate
Full summary, score breakdown and related studies → Original source
Our findings support an association of APOE ɛ4 and p-tau181 with preclinical AD and hippocampus functioning. 4 key findings →
Design: longitudinal study Evidence: moderate
Full summary, score breakdown and related studies → Original source
Longitudinal OEF change in older adults is primarily related to vascular pathology. 2 key findings →
Design: longitudinal study Evidence: moderate
Full summary, score breakdown and related studies → Original source
Genetic risk for AD does not modify the association between hypertension and dementia. 4 key findings →
Design: cohort Participants: 11,597 Evidence: moderate
Full summary, score breakdown and related studies → Original source Full text may need a subscription
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 27,780 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 27,780 records, built mostly from automated pulls of Europe PMC (61.1% of the library) and OpenAlex (18.3%), 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 →