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.

(cobalamin)-dependent pathways. Supplementation of B vitamins has been shown to effectively reduce plasma homocysteine levels. 2 key findings →

Evidence: low

A growing body of literature has suggested that obstructive sleep apnea (OSA) and habitual short sleep duration are linked to poor cognitive function. 4 key findings →

Evidence: low

Retinas of transgenic mice harboring a mutant presenilin (PS1) and a mutant APP gene were processed for TUNEL and immunohistochemistry with antibodies against APP, amyloid-beta, monocyte chemotactic protein (MCP)-1, and F4/80. 4 key findings →

Evidence: low

Triggering receptor expressed on myeloid cells 2 (TREM2), a receptor exclusively expressed by microglia in the brain, modulates microglial immune homeostasis. 4 key findings →

Evidence: low

AIDS dementia complex and HIV-1 brain infection: clinical-virological correlations

✓ Peer-reviewed alzhub usefulness score 45 out of 100. Annals of neurology 1995-10-01

To evaluate the presence and distribution of central nervous system infection by human immunodeficiency virus type 1 (HIV-1), we used immunohistochemical methods to map the HIV-1 p24 core protein in the brains of 55 autopsied patients with acquired immunodeficiency syndrome (AIDS). 4 key findings →

Evidence: low

Ten‐year Black‐White disparities in prison population are associated with cognitive decline among people racialized as Black starting one year later. 5 key findings →

Participants: 2,300 Evidence: low

Core cultural values, along with commonly held beliefs about dementia, influence the caregiving roles assumed by Hispanic/Latino caregivers. 5 key findings →

Design: longitudinal study Evidence: moderate

Gridlock in hospital medicine

✓ Peer-reviewed alzhub usefulness score 43 out of 100. Journal of Hospital Medicine 2023-12-12

Before the COVID-19 pandemic, supply and demand forcast models predicted significant nursing shortages across the United States through 2030 due to both an aging patient population and nursing workforce.1, 2 However, during the pandemic, we saw an exodus of younger nurses in addition to early retirements. 5 key findings →

Participants: 100 Evidence: low

BackgroundAlzheimer's disease (AD) and related dementias are leading causes of death worldwide. 4 key findings →

Participants: 6,909 Evidence: moderate

Participants racialized as Black who lived in places with higher levels of area‐level structural socioeconomic racism experienced lower levels of cognition at baseline and at varying time points in the six‐year period—compared to those in places with lower structural socioeconomic racism. 2 key findings →

Participants: 1,172 Evidence: low

Overexpression of Alzheimer amyloid precursor protein (APP) produces dramatically different phenotypes in transgenic mice depending on the genetic background. 1 key finding →

Evidence: low

The human and rat hippocampus is highly susceptible to iron deficiency (ID) during the late fetal, early neonatal time period which is a peak time of regulated brain iron uptake and utilization. 5 key findings →

Evidence: low

Alzheimer disease blood biomarkers and cognition in midlife

✓ Peer-reviewed alzhub usefulness score 42 out of 100. Alzheimer s & Dementia 2025-12-01

Older age, White race, APOE ε4 carrier, and diabetes were associated with biomarker levels indicative of higher AD risk (lower Aβ42/40; higher p-tau217, p-tau217/Aβ42, NfL, and GFAP). 5 key findings →

Participants: 1,356 Evidence: low

Five weeks of daily IN dosing of Long Evans rats with 15 μL of a 1% (0.3 mg), but not 0.1% (0.03 mg), solution of DFO rescued cognitive impairment caused by ICV STZ administration as assessed with the Morris Water Maze (MWM) test of spatial memory and learning. 4 key findings →

Evidence: low

The associations of lower foveal capillary density with cerebral WMH and amyloid positivity suggest that further research is warranted to evaluate for shared mechanisms of disease between small vessel disease and AD pathologies. 5 key findings →

Participants: 41 Evidence: low

Naturally Occurring Monoclonal Antibodies and Their Therapeutic Potential for Neurologic Diseases

✓ Peer-reviewed alzhub usefulness score 41 out of 100. JAMA neurology 2015-11-01

Many insults, including trauma, ischemia, infection, inflammation, and neurodegeneration, result in irreversible damage to the central nervous system. 3 key findings →

Design: clinical trial Evidence: high

Blood-based biomarkers hold significant promise for the early detection and diagnosis of Alzheimer’s disease (AD) and other dementias. 5 key findings →

Evidence: low

The association between poor cardiovascular health and cognitive decline as well as dementia progression has been inconsistent across studies. 4 key findings →

Evidence: low

Tauopathies are neurodegenerative diseases characterized by the pathological accumulation of microtubule-associated protein tau (MAPT) in the brain. 3 key findings →

Evidence: low

Medicare Plan Switching Among Assisted Living Residents: The Role of Memory Care

✓ Peer-reviewed alzhub usefulness score 39 out of 100. Innovation in Aging 2025-12-01

These findings suggest that moving to an AL influences Medicare enrollment decisions; and, variation in switching exists between the type of AL (general vs memory care) and whether or not an individual has dementia. 4 key findings →

Participants: 63,395 Evidence: low

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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 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.

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 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 →

Newest studies, as a dated timeline →    Atom feed