43/100
The microbiota-gut-brain axis plays an important role in the development of neurodegenerative diseases. 2 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
Research
27,380 Alzheimer's and dementia studies in plain English, each scored out of 100.
Certain diets, such as the Mediterranean diet, may play a significant role in healthy aging by preventing the onset of certain diseases and by improving the aging process itself. 4 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
The Mediterranean diet is a plant-based, antioxidant-rich, unsaturated fat dietary pattern that has been consistently associated with lower rates of noncommunicable diseases and total mortality, so that it is considered one of the healthiest dietary patterns. 5 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
Aging is a multi-faceted process caused by the accumulation of cellular damage over time, associated with a gradual reduction of physiological activities in cells and organs. 3 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
Emerging evidence indicates that gut microbiota is important in the regulation of brain activity and cognitive functions. 1 key finding →
Evidence: low
Full summary, score breakdown and related studies → Original source
Gut microbiota is emerging as a key regulator of many disease conditions and its dysregulation is implicated in the pathogenesis of several gastrointestinal and extraintestinal disorders. 5 key findings →
Design: narrative review Evidence: low
Full summary, score breakdown and related studies → Original source
Curcumin, a polyphenolic compound derived from Curcuma longa, has gained significant attention for its potential therapeutic benefits, particularly counteracting inflammation, oxidative stress, and metabolic disorders. 3 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
43/100
The gastrointestinal (GI) tract, home to the largest microbial population in the human body, plays a crucial role in overall health through various mechanisms. 4 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
Endometriosis is a chronic, oestrogen-dependent inflammatory condition affecting approximately 10% of women of reproductive age, frequently associated with chronic pelvic pain, dysmenorrhoea and infertility, substantially impairing quality of life. 4 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
After adjusting for baseline scores via ANCOVA, the experimental group demonstrated significantly higher post-intervention outcomes compared to the control group (p < 0.001). 5 key findings →
Participants: 58 Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Bivariate analyses showed that chain grocery store shoppers reported significantly greater fruit and vegetable intake (2.42 vs. 2.14 times/day for independent grocery store shoppers, p < 0.001) and lower rates of food insecurity compared to independent store shoppers (45.9% vs. 65.3% for independent grocery store shoppers, p < 0.001). 5 key findings →
Design: cross-sectional Evidence: low
Full summary, score breakdown and related studies → Original source Free full text
Alzheimer's disease (AD) is the most common form of senile dementia, accounting for up to 70% of dementia cases. 3 key findings →
Design: narrative review Evidence: low
Full summary, score breakdown and related studies → Original source
The prevalence of degenerative diseases has risen in western countries. 4 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
Alzheimer’s disease (AD), characterized by cognitive decline and devastating neurodegeneration, is the most common age-related dementia. 5 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
Current demographic trends indicate that the population is aging. 3 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
Choline is an essential nutrient for humans. 2 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
Metabolic endotoxemia is a condition in which blood lipopolysaccharide (LPS) levels are elevated, regardless of the presence of obvious infection. 5 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
The bidirectional communication between the central nervous system (CNS) and the gut microbiota plays a pivotal role in human health. 1 key finding →
Evidence: low
Full summary, score breakdown and related studies → Original source
An increasing aging population worldwide accounts for a growing share of noncommunicable diseases (NCDs) of the overall social and economic burden. 4 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
MetS and cognitive decline share common cardiometabolic pathways as MetS components can trigger cognitive impairment. 5 key findings →
Design: narrative review Evidence: low
Full summary, score breakdown and related studies → Original source
Metabolic syndrome (MS) is a set of cardio-metabolic risk factors that includes central obesity, hyperglycemia, hypertension, and dyslipidemias. 5 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
41/100
Alzheimer's disease is a progressive brain disease that is becoming a major health problem in today's world due to the aging population. 2 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
The average life expectancy of the world population has increased remarkably in the past 150 years and it is still increasing. 2 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
The term neuronutrition has been proposed as part of nutritional neuroscience, studying the effects of various dietary components on behavior and cognition. 5 key findings →
Design: narrative review Evidence: low
Full summary, score breakdown and related studies → Original source
Magnesium is the fourth most abundant mineral in the body. 2 key findings →
Evidence: low
Full summary, score breakdown and related studies → Original source
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 →