27,780 Alzheimer's and dementia studies in plain English, each scored out of 100.
We randomly assigned patients with a computer-generated sequence in a 4:1 ratio overall to receive AADvac1 or placebo. 1 key finding →
Design: clinical trial Participants: 30 Evidence: high
Full summary, score breakdown and related studies → Original source
Comparable modest reductions in agitation occurred in patients receiving haloperidol, trazodone, BMT, and placebo. 4 key findings →
Participants: 149 Evidence: high
Full summary, score breakdown and related studies → Original source
Community occupational therapy intervention for patients with dementia and their care givers is successful and cost effective, especially in terms of informal care giving. 3 key findings →
Design: randomized controlled trial Participants: 135 Evidence: high
Full summary, score breakdown and related studies → Original source
Patient and caregiver factors contribute to caregiver burden in persons living with PD. 5 key findings →
Design: randomized controlled trial Participants: 175 Evidence: high
Full summary, score breakdown and related studies → Original source
Fewer than half of the older adults dispensed donepezil in Ontario would have been eligible to participate in the RCTs that established the efficacy of this drug. 4 key findings →
Design: systematic review Participants: 3,423 Evidence: high
Full summary, score breakdown and related studies → Original source
In total, 994 patients received cholinesterase inhibitor treatment (rivastigmine, n = 495; donepezil, n = 499), and 57.9% of patients completed the study. 5 key findings →
Participants: 495 Evidence: high
Full summary, score breakdown and related studies → Original source
Group 3 showed less decrease in the SIB score at 12 and 24 weeks compared with group 1 (P < 0.05). 5 key findings →
Design: clinical trial Participants: 31 Evidence: high
Full summary, score breakdown and related studies → Original source
Comparing with the placebo group (n = 83, change - 1.45), the ADAS-cog12 score change in the GV-971 600-mg group (n = 76) was - 1.39 (p = 0.89) and the GV-971 900-mg group (n = 83) was - 2.58 (p = 0.30). 5 key findings →
Participants: 83 Evidence: high
Full summary, score breakdown and related studies → Original source
We investigated the effect of a multidomain lifestyle intervention on the risk of dementia estimated using the validated CAIDE risk score (post-hoc analysis). 1 key finding →
Design: randomized controlled trial Evidence: high
Full summary, score breakdown and related studies → Original source
Individuals with cognitive profiles consistent with probable executive MCI were identified using simple assessments of global cognition, memory and executive functions in a community-dwelling older population. 2 key findings →
Design: randomized controlled trial Participants: 161 Evidence: high
Full summary, score breakdown and related studies → Original source
Both t-tau and p-tau are suitable AD blood biomarkers, and p-tau217 is more sensitive than other tau biomarkers to differentiate MCI and AD. 3 key findings →
Design: systematic review Participants: 56 Evidence: high
Full summary, score breakdown and related studies → Original source
This meta-analysis pooled 30 studies (nearly 9,800 people from 10 countries) to see how well p-tau217 measured in blood or spinal fluid detects Alzheimer's amyloid and tau pathology compared with PET scans. 4 key findings →
Design: meta-analysis Participants: 9,787 Evidence: high
Full summary, score breakdown and related studies → Original source
This was, at the time, the largest genetic study of Alzheimer's disease ever done, comparing DNA from over 111,000 people with the disease (or a strong family history) to nearly 680,000 people without it. 4 key findings →
Design: meta-analysis Participants: 788,989 Evidence: high
Full summary, score breakdown and related studies → Original source
Among community-dwelling patients with moderate to severe dementia and their caregivers, dementia palliative care, compared with usual care, did not significantly improve patients' neuropsychiatric symptoms through 24 months. 5 key findings →
Design: RCT Participants: 201 Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
Then, voxel-wise brainwide association analyses were used to identify gray matter volumes (GMVs) associated with social isolation and with loneliness. 5 key findings →
Design: cohort Participants: 462,619 Evidence: moderate
Full summary, score breakdown and related studies → Original source Full text may need a subscription
Cost-effective strategies for identifying amyloid-β (Aβ) positivity in patients with cognitive impairment are urgently needed with recent approvals of anti-Aβ immunotherapies for Alzheimer's disease (AD). 2 key findings →
Design: cohort Participants: 348 Evidence: high
Full summary, score breakdown and related studies → Original source Free full text
Of a total 912 participants, there were 499 males (54.7%) and 413 females (45.3%), and the mean (SD) age was 71.1 (8.49) years. 5 key findings →
Design: cohort Participants: 912 Evidence: high
Full summary, score breakdown and related studies → Original source Free full text
Mean age was 83.5 (SD, 8.5) years in cohort 1, 69.1 (SD, 10.3) years in cohort 2, and 35.8 (SD, 10.7) years in cohort 3; 38% were women in cohort 1, 51% in cohort 2, and 57% in cohort 3. 4 key findings →
Design: cross-sectional Participants: 301 Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
An antecedent rise in Aβ was associated with subsequent changes in tau (1.07 flortaucipir standardized uptake value ratios [SUVr]/PiB-SUVr; 95% CI, 0.13-3.46; P = .02). 5 key findings →
Design: cohort study Participants: 279 Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
Among 1431 participants, the mean (SD) age was 71.2 (8.8) years; 751 (52.5%) were male. 2 key findings →
Design: cohort study Participants: 1,135 Evidence: moderate
Full summary, score breakdown and related studies → Original source Free full text
Six months of high-intensity aerobic exercise had sex-specific effects on cognition, glucose metabolism, and hypothalamic-pituitary-adrenal axis and trophic activity despite comparable gains in cardiorespiratory fitness and body fat reduction. 3 key findings →
Evidence: high
Full summary, score breakdown and related studies → Original source Free full text
No clinically important adverse events were associated with treatment. 2 key findings →
Design: clinical trial Participants: 432 Evidence: high
Full summary, score breakdown and related studies → Original source Free full text
One randomized clinical trial (RCT) (n = 4005) examined the direct effect of screening for cognitive impairment on patient outcomes, including potential harms, finding no significant differences in health-related quality of life at 12 months (effect size, 0.009 [95% CI, -0.063 to 0.080]). 2 key findings →
Design: meta-analysis Participants: 4,005 Evidence: high
Full summary, score breakdown and related studies → Original source Free full text
Older adults with higher triglyceride levels within the normal to high-normal range had a lower dementia risk and slower cognitive decline over time compared with individuals with lower triglyceride levels. 5 key findings →
Design: randomized controlled trial Participants: 13,976 Evidence: high
Full summary, score breakdown and related studies → Original source Free full text
These results show that in addition to APOE ε4 allele count, severity of Aβ neuropathology and comorbid cerebrovascular pathology may be relevant for clinicians prescribing anti-Aβ monoclonal antibodies for early AD and developing individualized safety monitoring plans. 2 key findings →
Design: clinical trial Participants: 985 Evidence: high
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. 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 →