27,380 Alzheimer's and dementia studies in plain English, each scored out of 100.
Poor diet and obesity are associated with cognitive impairment throughout adulthood, and increased dementia risk in aging. 1 key finding →
Evidence: low
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Implicit memory, including priming, can be preserved in aging and dementia despite impairment of explicit memory. 1 key finding →
Evidence: low
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The high burden of cognitive impairment in hemodialysis and chronic kidney disease (CKD) patients has only recently become recognized. 2 key findings →
Evidence: low
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The role of physical exercise in the prevention of Alzheimer's disease (AD) has been widely studied. 4 key findings →
Participants: 20 Evidence: low
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Understanding preclinical transitions to impairment in cognitive abilities associated with risks for functional difficulty and dementia. 4 key findings →
Evidence: low
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Little is known about whether cognitive assessments can be completed remotely by older adults at risk for dementia, and there is no consensus on which tool is best. 1 key finding →
Participants: 52 Evidence: high
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A wMD was related to slowed EM declines across sociodemographic populations in a national U.S. sample. 2 key findings →
Design: cross-sectional Participants: 833 Evidence: moderate
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There were no significant associations in men. 5 key findings →
Participants: 6,028 Evidence: low
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Our results will provide new evidence of the efficacy of an innovative multi-component intervention integrating IVR and telemedicine in SCD individuals. 2 key findings →
Participants: 75 Evidence: high
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Cognitive decline occurred in 38.1% of participants but was not associated with MD adherence. 5 key findings →
Participants: 8,568 Evidence: low
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In years when older adults subjectively reported fewer difficulties with their finances, they objectively performed better at financial tasks and this relationship became stronger over 10 years. 5 key findings →
Participants: 2,802 Evidence: low
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We anticipate that transcranial alternating current stimulation will be a well-tolerated treatment, with no serious side effects and with considerable short- and long-term cognitive improvements. 2 key findings →
Participants: 75 Evidence: high
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A high adherence to the Mediterranean diet has been associated with slower cognitive decline, with reduced risk of mild cognitive impairment conversion to Alzheimer's disease and with reduced risk of Alzheimer's disease. 4 key findings →
Evidence: low
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Impaired ability to conduct daily activities is a diagnostic criterion for dementia and a determinant of healthcare services utilization and caregiver burden. 4 key findings →
Evidence: low
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In South Korea, digital literacy education programs are expected to help its older population participate in online welfare services to increase their social support, self-esteem and well-being. 4 key findings →
Evidence: low
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The prevalence of obesity is growing and now includes at least one-third of the adult population in the United States. 5 key findings →
Evidence: low
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We have previously shown that beta-band EEG activity is related to attentional modulation in the visual system of cats and humans. 4 key findings →
Evidence: low
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The hippocampus is one of the most well studied structures in the human brain. 4 key findings →
Evidence: low
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Postoperative cognitive dysfunction (POCD) is a common disorder following surgery, which seriously threatens the quality of patients' life, especially the older people. 4 key findings →
Evidence: low
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The study has enrolled over 1,600 normal control participants since study inception. 150 original participants continue their participation. 1 key finding →
Design: cohort study Participants: 103 Evidence: moderate
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Except for the visual-spatial memory test, nonlinear approaches provided a better fit than linear methods to model the associations of sedentary time with other cognitive outcomes. 5 key findings →
Participants: 32,875 Evidence: low
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Cardiovascular risk factors and lifestyle factors are associated with an increased risk of cognitive decline and dementia in observational studies, and have been targeted by multidomain interventions. 5 key findings →
Participants: 4,162 Evidence: low
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These programs are considered beneficial nonpharmacological cognitive training interventions for middle-aged women at high risk of cognitive impairment. 1 key finding →
Participants: 30 Evidence: low
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The number of the elderly across the globe will approximate 2.1 billion by 2050. 3 key findings →
Evidence: low
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The Northwestern University SuperAging Project recruits community dwellers over the age of 80 who have unusually high performance on tests of episodic memory. 1 key finding →
Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
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.
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 →