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.

AF is associated with greater cognitive decline and increased risk of dementia, independent of ischemic stroke. 5 key findings →

Participants: 515 Evidence: low

In this multi-cohort study of older adults without cognitive impairment, we show that WMH and lacunes independently predict increased risk of MCR, after adjusting for key confounders. 5 key findings →

Design: cohort study Participants: 1,772 Evidence: moderate

Occupational exposure to pesticides increases the risk of incident AD: the Cache County study

✓ Peer-reviewed alzhub usefulness score 54 out of 100. Neurology 2010-05-01

Commonly used organophosphate and organochlorine pesticides inhibit acetylcholinesterase at synapses in the somatic, autonomic, and central nervous systems and may therefore have lasting effects on the nervous system. 2 key findings →

Evidence: low

The American Heart Association's LS7 score identified individuals who were vulnerable to multiple chronic nonvascular conditions. 4 key findings →

Participants: 6,506 Evidence: low

Neuropsychiatric symptoms (NPSs) are hallmarks of Alzheimer's disease (AD), causing substantial distress for both people with dementia and their caregivers, and contributing to early institutionalization. 5 key findings →

Evidence: low

The interplay between midlife vascular risk factors and midlife cognitive function with later life mild cognitive impairment (MCI) and dementia (DEM) is not well understood. 4 key findings →

Participants: 5,995 Evidence: low

Understanding Medicare: Hearing Loss and Health Literacy

✓ Peer-reviewed alzhub usefulness score 54 out of 100. Journal of the American Geriatrics Society 2020-08-03

Medicare beneficiaries with a little or a lot of trouble hearing had 18% (95% confidence interval [CI] odds ratio [OR] = 1.10-1.27) and 25% (95% CI OR = 1.07-1.47) increased odds of reporting greater difficulty with understanding Medicare, respectively, compared with those with no hearing trouble. 3 key findings →

Design: cross-sectional Participants: 10,510 Evidence: low

These data confirm that NPS are risk factors for conversion from CIND to dementia. 1 key finding →

Participants: 230 Evidence: low

The Alzheimer's Association hosted the second Latinos & Alzheimer's Symposium in May 2021. 2 key findings →

Evidence: low

The prevalence of ICAS in older adults is high, and it could be a target for primary prevention of stroke and dementia in this population. 3 key findings →

Participants: 1,765 Evidence: moderate

Benefits of fatty fish on dementia risk are stronger for those without APOE epsilon4

✓ Peer-reviewed alzhub usefulness score 51 out of 100. Neurology 2005-11-01

In the Cardiovascular Health Cognition Study, consumption of fatty fish was associated with a reduced risk of dementia and Alzheimer disease for those without the APOE epsilon4 allele. 2 key findings →

Evidence: low

High white matter grade (WMG) on magnetic resonance imaging (MRI) is a risk factor for dementia, stroke and disability. 5 key findings →

Participants: 3,245 Evidence: low

Vascular risk factors for Alzheimer disease (AD) and vascular dementia (VaD) have been evaluated; however, few studies have compared risks by dementia subtypes and sex. 1 key finding →

Evidence: moderate

The association of testosterone concentrations with dementia risk remains uncertain. 4 key findings →

Evidence: low

The cardiovascular health study: Design and rationale

✓ Peer-reviewed alzhub usefulness score 51 out of 100. Annals of Epidemiology 1991-02-01

The Cardiovascular Health Study is a population-based, longitudinal study designed to evaluate factors related to the onset, course, and risk of coronary heart disease and stroke in adults aged 65 years and older. 4 key findings →

Modifiable factors that alter the size of the hippocampus with ageing

✓ Peer-reviewed alzhub usefulness score 50 out of 100. Nature reviews. Neurology 2012-03-13

The hippocampus is particularly vulnerable to the neurotoxic effects of obesity, diabetes mellitus, hypertension, hypoxic brain injury, obstructive sleep apnoea, bipolar disorder, clinical depression and head trauma. 1 key finding →

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
  • Randomized / 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
  • Multicenter 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 31,780 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.

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 31,780 records, built mostly from automated pulls of Europe PMC (66% of the library) and OpenAlex (16%), 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.

1,045 records (3.3% 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 →

Newest studies, as a dated timeline →    Atom feed    Where this research is being discussed: events

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