Get help now — free helplines

You can call any of these for free. You do not need a diagnosis, an appointment, or a crisis to call — questions and plain exhaustion are reasons enough.

  • Alzheimer's Association 24/7 Helpline 800-272-3900 24 hours a day, 365 days a year Free, confidential support and information for people with dementia, caregivers, families and the public. Master's-level clinicians. Also Spanish.
  • 988 Suicide & Crisis Lifeline 988 24/7 Call or text 988, or chat at 988lifeline.org. For anyone in emotional distress or a mental-health crisis, including caregivers.
  • Alzheimer's Foundation of America (AFA) Helpline 866-232-8484 9:00 am - 9:00 pm ET, seven days a week Licensed social workers providing support, info and referrals. Also text message and web chat. Text: 646-586-5283

In a medical emergency, call 911. More numbers, and what each line does, on the help page.

Find studies

A note on reading research. One study is rarely the final word.

We try to note the size of a study, whether it was in humans or animals, and how early-stage the finding is. If a summary here doesn't make that clear, treat it with extra caution and check the original source.

Genome-wide significance in fully adjusted models (sex, age, APOE genotype, population stratification) was observed for a SNP in ABCA7 (rs115550680, allele = G; frequency, 0.09 cases and 0.06 controls; odds ratio [OR], 1.79 [95% CI, 1.47-2.12]; P = 2.2 × 10(-9)), which is in linkage disequilibrium with SNPs previously associated with Alzheimer disease in Europeans (0.8 Conclusions and relevance In this meta-analysis of data from African American participants, Alzheimer disease was significantly associated with variants in ABCA7 and with other genes that have been associated with Alzheimer disease in individuals of European ancestry. 4 key findings →

Design: meta-analysis Participants: 5,896 Evidence: high

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

Digital Detection of Dementia in Primary Care: A Randomized Clinical Trial

✓ Peer-reviewed alzhub usefulness score 70 out of 100. JAMA Network Open 2025-11-03

Compared with the usual care clinics (12-month incidence, 213 of 1724 [12.4%]), the odds of an incident ADRD diagnosis were higher in the clinics randomized to QDRS plus PDM (12-month incidence, 355 of 2301 [15.4%]; adjusted odds ratio [AOR], 1.31; 95% CI, 1.05-1.64) but not the clinics randomized to PDM only (12-month incidence, 134 of 1300 [10.3%]; AOR, 0.84; 95% CI, 0.63-1.11]). 3 key findings →

Design: RCT Participants: 5,325 Evidence: moderate

We were unable to detect a difference in HRQOL for screening for ADRD among older adults. 3 key findings →

Design: randomized controlled trial Participants: 2,008 Evidence: high

TREM2 is associated with increased risk for Alzheimer's disease in African Americans

✓ Peer-reviewed alzhub usefulness score 67 out of 100. Molecular neurodegeneration 2015-04-10

TREM2 encodes for triggering receptor expressed on myeloid cells 2 and has rare, coding variants that associate with risk for late-onset Alzheimer's disease (LOAD) in Caucasians of European and North-American origin. 4 key findings →

Design: case-control study Participants: 800 Evidence: moderate

Collaborative care for the treatment of Alzheimer disease resulted in significant improvement in the quality of care and in behavioral and psychological symptoms of dementia among primary care patients and their caregivers. 5 key findings →

Participants: 84 Evidence: high

Post-MI Hosp-CR and Home-CR are similarly effective in the short term and improve TWC and HRQL in each age group. 2 key findings →

Design: randomized controlled trial Participants: 90 Evidence: high

Targeting Functional Decline in Alzheimer Disease: A Randomized Trial

✓ Peer-reviewed alzhub usefulness score 63 out of 100. Annals of internal medicine 2016-11-22

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

The use of AC medication was associated with increased brain atrophy and dysfunction and clinical decline. 3 key findings →

Design: longitudinal study Evidence: moderate

Cholesterol, APOE genotype, and Alzheimer disease: an epidemiologic study of Nigerian Yoruba

✓ Peer-reviewed alzhub usefulness score 62 out of 100. Neurology 2006-01-01

There was a significant interaction between cholesterol, APOE-epsilon4, and the risk of Alzheimer disease (AD) in the Yoruba, a population that has lower cholesterol levels and lower incidence rates of AD compared to African Americans. 4 key findings →

Design: longitudinal study Participants: 1,075 Evidence: moderate

This randomized clinical trial found that ADRD screening in PC was not associated with improvement in family member health-related quality of life, caregiver preparedness, or caregiving self-efficacy. 5 key findings →

Design: RCT Participants: 1,808 Evidence: null result

In this review, the evidence that single clinically defined cardiovascular risk factors are significantly associated with incident AD is inconsistent at best. 2 key findings →

Design: systematic review Evidence: high

Prevalence of Unrecognized Cognitive Impairment in Federally Qualified Health Centers

✓ Peer-reviewed alzhub usefulness score 60 out of 100. JAMA Network Open 2024-10-22

A total of 844 eligible individuals were consecutively approached, 294 consented to participate, and 204 completed the study (mean [SD] age, 70.0 [5.1] years; 127 women [62.3%]). 5 key findings →

Design: cross-sectional Participants: 127 Evidence: low

Genome-wide association study of CSF biomarkers Abeta1-42, t-tau, and p-tau181p in the ADNI cohort

✓ Peer-reviewed alzhub usefulness score 59 out of 100. Neurology 2010-12-01

In addition to known candidate genes, APOE, TOMM40, and one hypothetical gene LOC100129500 partially overlapping APOE; one novel gene, EPC2, and several other interesting genes were associated with CSF biomarkers that are related to AD. 3 key findings →

Participants: 374 Evidence: moderate

Six-item screener to identify cognitive impairment among potential subjects for clinical research

✓ Peer-reviewed alzhub usefulness score 56 out of 100. Medical care 2002-09-01

The six-item screener is a brief and reliable instrument for identifying subjects with cognitive impairment and its diagnostic properties are comparable to the full MMSE. 1 key finding →

Evidence: moderate

The Patient Protection and Affordable Care Act added a new Medicare benefit, the Annual Wellness Visit (AWV), effective January 1, 2011. 5 key findings →

Evidence: low

In this cohort of 2022 insulin-treated older adults with diabetes and ADRD (1011 CGM users and 1011 SMBG users; mean [SD] age, 76.4 [6.7] years; 1133 female [56.0%]), CGM use was significantly associated with lower risk of all-cause hospitalization (hazard ratio [HR], 0.86; 95% CI, 0.76-0.96) and mortality (HR, 0.57; 95% CI, 0.48-0.67) compared with SMBG use. 5 key findings →

Design: cohort study Evidence: moderate

An important goal of advance care planning (ACP) is ensuring that patients receive care concordant with their preferences. 5 key findings →

Design: randomized controlled trial Evidence: high

This study is the first clinical trial to examine the efficacy of combined physical and cognitive exercise on cognitive function in older ICU survivors with delirium. 1 key finding →

Design: randomized controlled trial Evidence: high

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Where “Free full text” comes from

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

How the 0–100 score works — and why some entries are capped

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.

  • Journal tier up to 10 pts
  • Journal's citation record up to 4 pts
  • Study design up to 12 pts
  • Strength of evidence up to 5 pts
  • Peer-review validation up to 10 pts
  • How recent up to 5 pts
  • Sample size up to 4 pts
  • Effect reported up to 3 pts
  • Studied in people up to 3 pts
  • Randomised / blinded up to 2 pts
  • Times cited up to 7 pts
  • Citations per year up to 5 pts
  • Impact for its field and year up to 6 pts
  • Cited by studies here up to 6 pts
  • Still being cited up to 4 pts
  • Senior author's track record up to 4 pts
  • Institution's track record up to 3 pts
  • Multi-centre collaboration up to 3 pts
  • Indexed in PubMed up to 2 pts
  • Free to read up to 2 pts

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.

What this library is — and isn't

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 →

Newest studies, as a dated timeline →    Atom feed