27,380 Alzheimer's and dementia studies in plain English, each scored out of 100.
More research is needed to elucidate the neural mechanisms underlying these regional associations, which may involve motor and sensorimotor circuits hitherto largely neglected in the pathophysiology of AD. 1 key finding →
Design: cross-sectional Evidence: low
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Genetic variants within the VCAN gene may play a role in the mechanisms underlying microstructural integrity of the white matter in the brain measured as FA and MD. 4 key findings →
Design: cohort study Participants: 8,448 Evidence: moderate
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Nutrition is a modifiable factor potentially related to aging. 3 key findings →
Design: randomized controlled trial Participants: 661 Evidence: high
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Study objectives We investigated the effectiveness of a lighting intervention tailored to maximally affect the circadian system as a nonpharmacological therapy for treating problems with sleep, mood, and behavior in persons with Alzheimer disease and related dementias (ADRD). 3 key findings →
Participants: 46 Evidence: high
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Treatment with celecoxib or naproxen did not improve depressive symptoms over time compared with placebo. 5 key findings →
Design: longitudinal study Participants: 2,528 Evidence: high
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The expected outcome is to ensure the continuity of care from clinical practice to the patient's home, enabling also cost effectiveness and the empowerment of patient and caregiver in the care process, positively impacting on their quality of life. 1 key finding →
Design: randomized controlled trial Participants: 30 Evidence: high
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Naproxen may attenuate cognitive decline in slow decliners while accelerating decline in fast decliners. 2 key findings →
Participants: 2,388 Evidence: low
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Enrollment began in March 2001 and ended in December 2004 when treatments were suspended because of concerns regarding cardiovascular safety of the treatments. 1 key finding →
Evidence: high
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Vascular care in patients with Alzheimer disease with cerebrovascular lesions slows progression of WMLs. 2 key findings →
Participants: 123 Evidence: high
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This paper explores the rationale for a mobile phone-led intervention and details the app's effect on behavior change and subsequent clinical outcomes. 5 key findings →
Design: randomized controlled trial Participants: 102 Evidence: high
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Studies conducted more than 20 years ago suggested that physostigmine could improve memory in people with or without dementia. 5 key findings →
Participants: 29 Evidence: high
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Differential eligibility may contribute to underrepresentation of some minoritized racial and ethnic groups in early AD trials. 2 key findings →
Participants: 156 Evidence: high
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The authors could not definitively demonstrate whether the addition of 2 years of in-home occupational therapy to a collaborative care management model slowed the rate of functional decline among persons with Alzheimer disease. 3 key findings →
Evidence: high
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The present findings provide evidence of the benefits of NIBS, especially tDCS, for beneficial effect on cognition in patients with AD. 3 key findings →
Design: meta-analysis Participants: 12 Evidence: high
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44 participants were included: 20 PSEN1 E280A mutation carriers and 24 non-carriers. 2 key findings →
Participants: 44 Evidence: moderate
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Alzheimer's disease is the primary cause of dementia worldwide, with an increasing morbidity burden that may outstrip diagnosis and management capacity as the population ages. 5 key findings →
Participants: 417 Evidence: low
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Nutrition is an important modifiable risk factor that plays a role in the strategy to prevent or delay the onset of dementia. 2 key findings →
Design: systematic review Evidence: high
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Some prior studies showed lower circulating BDNF in persons with Alzheimer disease (AD) compared with control participants; however, it remains uncertain whether reduced levels precede dementia onset. 5 key findings →
Design: cohort study Participants: 140 Evidence: moderate
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The exact etiology of dementia is still unclear, but both genetic and lifestyle factors are thought to be key drivers of this complex disease. 1 key finding →
Participants: 6,352 Evidence: low
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Higher baseline body mass index (BMI) and slower declining BMI in late life are associated with a reduced risk of dementia, suggesting that low BMI or a faster decline in BMI in late life may be preclinical indicators of an underlying dementing illness, especially for those who were initially overweight or obese. 3 key findings →
Design: cohort study Evidence: moderate
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The ageing population is accompanied by increased rates of cognitive decline and dementia. 2 key findings →
Design: cohort study Evidence: high
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Frailty is strongly associated with dementia risk and affects the risk attributable to genetic factors. 4 key findings →
Participants: 1,762 Evidence: low
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Preclinical studies have shown that blueberry supplementation can improve cognitive performance and neural function in aged animals and have identified associations between anthocyanins and such benefits. 3 key findings →
Evidence: high
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Folic acid supplements may sometimes therefore include vitamin B12 supplements with simultaneous administration of vitamin B12.Lesser degrees of folate inadequacy are associated with high blood levels of the amino acid homocysteine which has been linked with the risk of arterial disease, dementia and Alzheimer's disease. 5 key findings →
Evidence: high
Full summary, score breakdown and related studies → Original source Free full text
The past and ongoing increase in midlife obesity prevalence will contribute significantly to the future prevalence of dementia and public health measures to reduce midlife obesity are simultaneously primary prevention measures to reduce the risk of dementia. 2 key findings →
Design: meta-analysis Evidence: high
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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 →