28,980 Alzheimer's and dementia studies in plain English, each scored out of 100.
Chronic traumatic encephalopathy (CTE) has been linked to participation in contact sports such as boxing and American football. 3 key findings →
Evidence: low
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Age-related hearing loss (ARHL) is the most prevalent sensory deficit in the elderly. 3 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
A link between Alzheimer's disease (AD) and metabolic disorders has been established, with patients with type 2 diabetes at increased risk of developing AD and vice versa. 2 key findings →
Evidence: low
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The amount of attention to age-related hearing loss (ARHL) has been growing, not only from the perspective of being one of the most common health conditions affecting older adults, but also from the perspective of its relation to cognition. 1 key finding →
Evidence: low
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Trouble falling or staying asleep, poor sleep quality, and short or long sleep duration are gaining attention as potential risk factors for cognitive decline and dementia, including Alzheimer's disease. 2 key findings →
Evidence: low
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The benefits of exercise are irrefutable. 1 key finding →
Evidence: low
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Economics and mental health are intertwined. 5 key findings →
Evidence: low
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Stroke remains a primary cause of morbidity throughout the world mainly because of its effect on cognition. 5 key findings →
Evidence: low
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Physical inactivity has recently been identified as a major and independent risk factor for the development of dementia and cognitive decline. 1 key finding →
Evidence: low
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Age-related hearing impairment (ARHI, also known as presbycusis) is potentially a reversible risk factor for dementia and Alzheimer disease (AD). 2 key findings →
Evidence: high
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A definitive trial to test the critical window hypothesis is not feasible. 2 key findings →
Evidence: high
Full summary, score breakdown and related studies → Original source Free full text
This study suggests that violence is a significant phenomenon and that all health workers, especially nurses, are at risk of suffering aggressive assaults. 4 key findings →
Design: cross-sectional Evidence: low
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The characteristics of dementia relating to excessive alcohol use have received increased research interest in recent times. 2 key findings →
Evidence: low
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Western countries are experiencing aging populations and increased longevity; thus, the incidence of dementia and Alzheimer's disease (AD) in these countries is projected to soar. 5 key findings →
Evidence: low
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Delirium is a debilitating form of brain dysfunction frequently encountered in the intensive care unit (ICU). 1 key finding →
Evidence: low
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Neuroinflammation is considered one of the cardinal features of Alzheimer's disease (AD). 5 key findings →
Evidence: low
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As public awareness of Alzheimer's disease increases, more people are asking for help and advice about memory problems. 1 key finding →
Evidence: low
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Age-related hearing impairment (ARHI) is the most common sensory impairment in the aging population; a third of individuals are affected by disabling hearing loss by the age of 65. 3 key findings →
Evidence: low
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Noncommunicable disease now contributes to the World Health Organization top 10 causes of death in low-, middle- and high-income countries. 2 key findings →
Evidence: low
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Individuals over 50 years of age comprise 11% of AIDS cases reported to the Centers for Disease Control and Prevention. 2 key findings →
Design: cohort study Evidence: moderate
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To evaluate the efficacy of cognitive rehabilitation therapies (CRTs) for mild cognitive impairment (MCI). 4 key findings →
Evidence: high
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Symptoms of memory loss are caused by a range of cognitive abilities or a general cognitive decline, and not just memory. 4 key findings →
Evidence: low
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Olfactory dysfunction is among the earliest nonmotor features of Parkinson disease (PD). 1 key finding →
Evidence: low
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The Montreal Cognitive Assessment (MoCA) has been proved brief and sensitive to screen for mild cognitive impairment (MCI) and early dementia in some developed countries or areas. 2 key findings →
Evidence: low
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In a preliminary effort to improve the early diagnosis of dementia, we developed a regression-based method for estimating premorbid intelligence measured by the ability to read irregular words from the American version of the Nelson Adult Reading Test (AMNART). 1 key finding →
Design: cross-sectional Evidence: low
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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 28,980 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 28,980 records, built mostly from automated pulls of Europe PMC (62.8% of the library) and OpenAlex (17.6%), 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.
1,038 records (3.6% of the library) are not peer-reviewed — 966 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 →