Patients with nonspouse caregivers less frequently participate in AD dementia trials. 2 key findings →
Evidence: high
Full summary, score breakdown and related studies → Original source Free full text
28,180 Alzheimer's and dementia studies in plain English, each scored out of 100.
Patients with nonspouse caregivers less frequently participate in AD dementia trials. 2 key findings →
Evidence: high
Full summary, score breakdown and related studies → Original source Free full text
Laypersons at heightened risk of Alzheimer disease discriminate among research scenarios of varying risks and burdens. 3 key findings →
Evidence: high
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A substantial proportion of persons with AD who were thought incapable of consenting to lower-risk or higher-risk studies have preserved capacity for appointing a research proxy. 2 key findings →
Evidence: high
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We examined how an Alzheimer disease (AD) family history assessment as compared to a risk assessment incorporating the absence of a disease-associated susceptibility allele affected risk perception among adult children with a family history of AD. 3 key findings →
Participants: 30 Evidence: high
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Estrogen-containing hormone therapy initiated during late postmenopause does not improve episodic memory (an important early symptom of Alzheimer's disease), and it increases dementia risk. 1 key finding →
Design: cohort study Evidence: high
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Among mild to moderate AD patients, enrolled in an actual clinical trial, these results suggest evidence based guidelines for using the MacCAT-CR understanding subscale to help guide judgments about whether a patient has the capacity to consent. 3 key findings →
Design: cross-sectional Evidence: high
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Twenty-five of 33 (75.8%) participants in the qigong group and 26 of 33 (78.8%) participants in the control group completed the 1-year exercise programs. 4 key findings →
Participants: 33 Evidence: high
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It is estimated that by 2030 there will be 82 million people in the world with dementia. 2 key findings →
Design: systematic review Evidence: high
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In a double blind randomized crossover trial lasting 6 months selegiline, a selective MAO-B inhibitor, was tested against placebo for activity on verbal memory performances in Alzheimer-type dementia (DAT). 1 key finding →
Evidence: high
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As a result of the PLST training, there was a decrease in the behavioural problems of Alzheimer's patients, along with a decrease in the care burden of the caregivers and an increase in their care satisfaction. 2 key findings →
Participants: 29 Evidence: high
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The concept of cognitive reserve (CR) suggests that innate intelligence or aspects of life experience like educational or occupational attainments may supply reserve, in the form of a set of skills or repertoires that allows some people to cope with progressing Alzheimer's disease (AD) pathology better than others. 3 key findings →
Evidence: low
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Vascular insults can initiate a cascade of molecular events leading to neurodegeneration, cognitive impairment, and dementia. 5 key findings →
Evidence: low
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Purpose of the study There is a global imperative to increase awareness of the emerging evidence on physical activity (PA) among older adults. 1 key finding →
Evidence: low
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Alzheimer's disease (AD) is the primary cause of age-related dementia. 3 key findings →
Evidence: low
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Advances in our understanding of the role of cardiovascular risks have shown them to be closely associated with cognitive impairment and dementia. 2 key findings →
Evidence: low
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While all groups are affected by the COVID-19 pandemic, the elderly, underrepresented minorities, and those with underlying medical conditions are at the greatest risk. 1 key finding →
Evidence: low
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Sensory abilities decline with age. More than 5% of the world's population, approximately 360 million people, have disabling hearing loss. 1 key finding →
Evidence: low
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The long-term consequences of repetitive head impacts have been described since the early 20th century. 5 key findings →
Evidence: low
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Cognitive impairment, including dementia, is a common but poorly recognized problem among patients with end-stage renal disease (ESRD), affecting 16-38% of patients. 1 key finding →
Evidence: low
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Alzheimer's disease (AD) is generally understood as primarily affecting cognition while sparing motor function, at least until the later stages of the disease. 1 key finding →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
The current study examined the relationship between cognitive function and falls in older people who did not meet criteria for dementia or mild cognitive impairment (N = 172). 5 key findings →
Participants: 172 Evidence: low
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The unique biochemical profile of homocysteine is characterized by chemical reactivity supporting a wide range of molecular effects and by a tendency to promote oxidant stress-induced cellular toxicity. 2 key findings →
Evidence: high
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Falls remain common in older people, with higher prevalence and morbidity in those who are cognitively impaired. 1 key finding →
Evidence: low
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Physical activity improves overall health and reduces the risk of many negative health outcomes and may be effective in improving cognition, independent functioning, and psychological health in older adults. 1 key finding →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Cognitive impairment can be influenced by a number of factors. 5 key findings →
Design: cohort study Evidence: moderate
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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. 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 28,180 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 28,180 records, built mostly from automated pulls of Europe PMC (61.7% of the library) and OpenAlex (18.1%), 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 →