The news raised these and the library has no study that tests them, or only studies that touch the topic without reporting an answer. These are the most valuable rows on this page: a relationship that was reported as news but that nobody in our library has checked is a real gap in the research.
adult ADHD and later dementia / MCI
What the news reported: ADHD → higher (reported >4x) later cognitive impairment risk (adults, US health records).
Surfaced by Health records link ADHD to more than fourfold higher risk of later cognitive impairment
(Medical Xpress, 2026-10-07) and 1 other news article.
What the library holds:
No study that tests this. We read 9 possible keyword matches and none of them did.
What is missing: None of the 13 keyword matches is an ADHD → dementia/MCI study; the top hits are an ADHD attention-function GWAS that mentions an Alzheimer-linked gene, and unrelated reviews. The library is silent on adult ADHD → later cognitive impairment.
Check it yourself: search the library for “ADHD” →
A keyword search returns studies that mention the word; our review found none that test this relationship.
nitrate/nitrite intake by source (drinking water vs vegetables) and dementia risk
What the news reported: water nitrate → higher risk; vegetable nitrate → lower risk (Danish cohort).
Surfaced by Nitrate in drinking water linked to increased dementia risk while nitrate from vegetables is linked to a lower risk
(Medical Xpress, 2026-01-27).
What the library holds:
No study that tests this. We read 6 possible keyword matches and none of them did.
What is missing: GAP: no study in the library relates dietary or drinking-water nitrate (or vegetable- vs water-derived nitrate) to dementia or cognition. The free-text hits are protein nitration biochemistry, an RBD study mentioning nitrate drugs, and a glaucoma review. News-implied source-dependent effect is untested here.
Check it yourself: search the library for “nitrate” →
A keyword search returns studies that mention the word; our review found none that test this relationship.
missed bill/mortgage/credit payments and years-to-dementia diagnosis
What the news reported: missed payments precede diagnosis by years (US credit/Medicare linkage).
Surfaced by Difficulty managing bills may signal early dementia
(NIH National Institute on Aging, 2025-02-18).
What the library holds:
No study that tests this. We read 8 possible keyword matches and none of them did.
What is missing: GAP: nothing in the library tests missed payments, credit-score changes or other transaction-level financial behaviour as a pre-diagnostic signal. The nearest records are a CSF-biomarker/financial-capacity prediction study with no stated results and caregiver financial-difficulty studies, which are a different relationship.
Check it yourself: search the library for “financial” →
A keyword search returns studies that mention the word; our review found none that test this relationship.
glucosamine supplement use and MCI -> dementia progression
What the news reported: glucosamine → ~25% higher progression (harm) (people with MCI, health records).
Surfaced by Glucosamine, a popular joint supplement, linked to faster Alzheimer’s progression
(ScienceDaily, 2026-09-27) and 1 other news article.
What the library holds:
No study that tests this. We read 5 possible keyword matches and none of them did.
What is missing: No study in the library examines glucosamine (or chondroitin) supplements and cognition or MCI progression. The 3 keyword matches and the free-text hits are glycan/O-GlcNAc biochemistry. The library is silent on this news-implied harm signal.
Check it yourself: search the library for “glucosamine” →
A keyword search returns studies that mention the word; our review found none that test this relationship.
polycystic ovary syndrome (PCOS/PMOS) and Alzheimer's / dementia risk in women
What the news reported: PCOS → higher AD/dementia risk, possibly mediated by metabolic disorders (women).
Surfaced by PMOS/PCOS may be linked to Alzheimer's disease and dementia
(Medical Xpress, 2026-10-13) and 1 other news article.
What the library holds:
No study that tests this. We read 18 possible keyword matches and none of them did.
What is missing: All 18 keyword matches were false positives: 'polycystic' matched Nasu-Hakola/PLOSL (polycystic lipomembranous osteodysplasia) TREM2/DAP12 papers, not polycystic ovary syndrome. The one female-specific dementia review does not mention PCOS in its summary. The library is silent on PCOS/PMOS → dementia.
Check it yourself: search the library for “PCOS” →
A keyword search returns studies that mention the word; our review found none that test this relationship.
BMI (overweight/obese) at dementia diagnosis and mortality after dementia diagnosis
What the news reported: higher BMI at diagnosis → LOWER mortality (reverse of midlife-risk direction) (people diagnosed with dementia).
Surfaced by Obesity linked to lower mortality risk in dementia
(Healio, 2026-10-15) and 1 other news article.
What the library holds:
4 studies reviewed:
4 touch the topic without reporting a direction.
What is missing: The specific relationship (BMI at dementia diagnosis → mortality after diagnosis) is only touched by one small null result. The BMI studies that exist are about dementia INCIDENCE (obesity both raising and lowering it: library record 2504 vs 4846), which is adjacent not the same. Survival-after-diagnosis by BMI is essentially a gap.
Check it yourself: these 4 studies in the library →
dementia diagnosis label and recommendation of life-sustaining treatment despite advance directive
What the news reported: dementia label → ~19 points less likely to recommend life-sustaining care (US survey respondents).
Surfaced by Survey participants less likely to recommend life-sustaining care for patients with dementia, despite documented wishes
(Medical Xpress, 2026-10-07) and 1 other news article.
What the library holds:
2 studies reviewed:
2 touch the topic without reporting a direction.
What is missing: GAP for the news's specific finding (the same patient described with vs without a dementia label is judged less suitable for life-sustaining care): no vignette/labelling-bias study is in the library. Adjacent: dementia lowers advance-care-planning rates, and feeding tubes show no survival benefit in hospitalised dementia patients.
Check it yourself: these 2 studies in the library →
gut microbial metabolite (imidazole propionate, ImP) / microbiome and AD risk, pathology, decline rate
What the news reported: higher ImP → higher AD risk and faster decline (adults).
Surfaced by Your gut may be making a molecule that raises Alzheimer’s risk
(ScienceDaily, 2026-10-03) and 1 other news article.
What the library holds:
3 studies reviewed:
3 touch the topic without reporting a direction.
What is missing: Imidazole propionate (ImP) specifically is a GAP: no reviewed study names it. Adjacent microbiome/metabolite studies (butyrate-producer depletion, TMAO and MCI) support a broader gut-metabolite→AD link but do not test ImP or faster decline.
Check it yourself: these 3 studies in the library →
income support / cash transfers and memory decline, dementia risk
What the news reported: cash transfer → slower memory decline (rural South Africa midlife/older adults).
Surfaced by South Africa cash transfer program slowed cognitive decline for midlife and older adults
(NIH National Institute on Aging, 2025-03-27).
What the library holds:
1 study reviewed:
1 touches the topic without reporting a direction.
What is missing: GAP for the interventional claim: no study in the library evaluates a cash transfer or income-support programme against memory or cognitive decline. Only observational wealth/poverty-dementia associations exist, which cannot say whether giving money changes cognition.
Check it yourself: these 1 study in the library →
physical activity and cognitive/motor decline in Parkinson's
What the news reported: more activity → slower decline (people with Parkinson's).
Surfaced by Physical activity linked to slower Parkinson’s progression
(Healio, 2026-10-14).
What the library holds:
1 study reviewed:
1 touches the topic without reporting a direction.
What is missing: GAP for the specific claim: no reviewed study reports physical activity vs COGNITIVE decline in Parkinson's disease. The nearest records say exercise may influence PD motor progression and that midlife exercise lowers dementia risk in seniors generally.
Check it yourself: these 1 study in the library →
accumulating health problems in prior 5 years and young-onset AD diagnosis
What the news reported: multimorbidity accumulates in the 5 years before early-onset AD diagnosis (Finnish registries).
Surfaced by Early-onset Alzheimer's disease shows different warning signs from established risk factors
(Medical Xpress, 2026-10-10).
What the library holds:
1 study reviewed:
1 touches the topic without reporting a direction.
What is missing: GAP for the temporal claim: no reviewed study tracks comorbidity accumulation in the 5 years BEFORE early-onset AD diagnosis. Reviewed records are cross-sectional comorbidity burden in young-onset dementia and autopsy co-pathology, which are different relationships.
Check it yourself: these 1 study in the library →
acetaminophen (Tylenol) exposure and brain organoid / neural development
What the news reported: news headline only - direction not stated in summary (organoids).
Surfaced by Dementia Cases Rising; Tylenol's Effect on Brain Organoids; Early-Onset Alzheimer's
(MedPage Today, 2026-10-13).
What the library holds:
No study that tests this. We read 2 possible keyword matches and none of them did.
What is missing: GAP, and a weak candidate: the news source implies a headline association only (direction not stated in its summary), and the library has no study on prenatal/early-life acetaminophen and neurodevelopment (the 2 hits are a curcumin PK study and an adult NSAID/dementia cohort where acetaminophen showed no trend).
Check it yourself: search the library for “acetaminophen” →
A keyword search returns studies that mention the word; our review found none that test this relationship.
agitation in AD and patient quality of life
What the news reported: more agitation → worse QoL (AD patients and caregivers).
Surfaced by Agitation impacts quality of life in Alzheimer’s disease
(Healio, 2026-10-06) and 2 other news articles.
What the library holds:
2 studies reviewed:
2 touch the topic without reporting a direction.
What is missing: Agitation → worse QUALITY OF LIFE of the person with dementia was not shown in any reviewed summary. The library links agitation to caregiver and staff burden (different outcome), and a PARO-robot meta-analysis found no effect on agitation or QoL (an intervention result, not an association).
Check it yourself: these 2 studies in the library →
Every study we reviewed that reports a direction points the same way the news did.
APOE genotype and delirium risk (incl. postoperative)
What the news reported: APOE4 → higher delirium risk even without dementia (>1 million people (GWAS)).
Surfaced by APOE gene raises delirium risk even without dementia, global analysis reveals
(Medical Xpress, 2025-11-24) and 1 other news article.
What the library holds:
2 studies reviewed:
2 point the same way as the news.
What is missing: Supported by two genetic studies (GWAS meta-analysis and a postoperative-delirium GWAS) - but the larger body of delirium studies in the library is about delirium → dementia, the reverse direction, which is why this relationship cuts across the existing categories. Only two APOE-delirium studies exist.
Check it yourself: these 2 studies in the library →
bone mineral density and brain structure / cognitive decline
What the news reported: lower (vertebral) BMD → worse brain structure and cognition (older adults).
Surfaced by Lower vertebral bone mineral density linked to cognitive decline
(Medical Xpress, 2026-09-30).
What the library holds:
3 studies reviewed:
2 point the same way as the news; 1 touches the topic without reporting a direction.
What is missing: Supporting studies cover heel/whole-body BMD and dementia; none in the reviewed set tests VERTEBRAL BMD specifically, which is the news's variable.
Check it yourself: these 3 studies in the library →
full-fat cheese / dairy intake and dementia risk, by APOE4 status
What the news reported: full-fat dairy → lower dementia among APOE4 non-carriers (~28,000 Swedes, 25 years).
Surfaced by A 25-year study found an unexpected link between cheese and dementia
(ScienceDaily, 2026-02-04).
What the library holds:
3 studies reviewed:
1 points the same way as the news; 2 touch the topic without reporting a direction.
What is missing: No reviewed study tests full-fat dairy x APOE4 status. Cheese → lower dementia is supported in one Japanese cohort without APOE data; the only APOE-conditioned diet result is for fat type. Dairy-cognition overall is inconclusive per a systematic review. The APOE-stratified dairy relationship is a gap.
Check it yourself: these 3 studies in the library →
PTSD (+ unmet social needs) and later dementia / cognitive impairment
What the news reported: PTSD with unmet social needs → higher dementia rates (veterans).
Surfaced by Connecting veterans' PTSD, unmet social needs to cognitive impairment and dementia
(Medical Xpress, 2026-10-12).
What the library holds:
2 studies reviewed:
1 points the same way as the news; 1 touches the topic without reporting a direction.
What is missing: PTSD → dementia is supported, but no study addresses the news-implied modifier (unmet social needs) and no veteran PTSD study from the news's cohort is present beyond a 2010 VA cohort.
Check it yourself: these 2 studies in the library →
volunteering / informal helping and rate of cognitive decline in APOE4 carriers
What the news reported: helping others → slower decline, buffering APOE4 risk (older adults with APOE4).
Surfaced by Helping others linked to slower cognitive decline among people at higher genetic risk for Alzheimer's
(Medical Xpress, 2026-10-13).
What the library holds:
2 studies reviewed:
1 points the same way as the news; 1 touches the topic without reporting a direction.
What is missing: No study in the library tests an APOE4 x volunteering interaction. Volunteering → slower decline is supported in general populations only; the APOE4-buffering part of the news idea is a gap.
Check it yourself: these 2 studies in the library →
white matter hyperintensity burden and real-world driving decline
What the news reported: more WMH → future decline in driving ability (older drivers).
Surfaced by ASA: White matter hyperintensity burden tied to future decline in older adults' driving ability
(Medical Xpress, 2026-02-02) and 1 other news article.
What the library holds:
3 studies reviewed:
2 point the same way as the news; 1 touches the topic without reporting a direction.
What is missing: Supported by a single small study (n=36, preclinical AD, Alzheimer's & Dementia 2025). library record 10766 and 10857 carry the identical title and appear to be duplicate or near-duplicate records of that one study, so they should not be counted as two independent confirmations.
Check it yourself: these 3 studies in the library →
epilepsy / seizures and young-onset (<65) dementia risk
What the news reported: epilepsy → higher young-onset dementia risk (adults <65).
Surfaced by Epilepsy associated with increased risk of dementia before age 65
(Medical Xpress, 2026-10-14).
What the library holds:
5 studies reviewed:
3 point the same way as the news; 2 touch the topic without reporting a direction.
What is missing: No reviewed summary tests epilepsy → dementia specifically in people under 65 (the young-onset framing of the news); the supporting studies are late-onset-epilepsy or all-age cohorts.
Check it yourself: these 5 studies in the library →
surgery / general anesthesia and postoperative delirium and cognitive decline
What the news reported: surgery/anesthesia → delirium and possible lasting brain injury (older adults).
Surfaced by Brain Damage After Anesthesia; Obesity and Dementia; Alan Alda's Parkinson's Disease
(MedPage Today, 2026-10-06) and 1 other news article.
What the library holds:
2 studies reviewed:
1 points the same way as the news; 1 touches the topic without reporting a direction.
What is missing: Post-surgical DELIRIUM is well covered (prediction and sedative choice); lasting cognitive/brain injury after anaesthesia or surgery in people without delirium was not found in the reviewed summaries - that half of the news idea is a gap. Overlaps existing clinical-safety/risk categories.
Check it yourself: these 2 studies in the library →
coffee / caffeine intake and dementia risk
What the news reported: 2-3 cups/day → lower risk; plateau above (NHS/HPFS cohorts and others).
Surfaced by This daily habit could lower dementia risk by 35%, scientists say
(ScienceDaily, 2026-05-12) and 2 other news articles.
What the library holds:
3 studies reviewed:
3 point the same way as the news.
What is missing: Coffee → lower dementia is supported by several observational cohorts; all are observational, and the summaries read do not show the plateau-above-3-cups shape. Decaf not associated in the 2026 cohort.
Check it yourself: these 3 studies in the library →
daily step count / midlife physical activity and cognitive decline and tau accumulation in amyloid+
What the news reported: ~3,000-7,500 steps/day → slower decline in high-amyloid adults; midlife exercise benefits strongest in Mexican Americans (older adults with elevated amyloid; Mexican American adults).
Surfaced by Just 3,000 steps a day linked to lower Alzheimer's risk in older adults
(Medical Xpress, 2025-11-09) and 2 other news articles.
What the library holds:
3 studies reviewed:
2 point the same way as the news; 1 touches the topic without reporting a direction.
What is missing: Steps → lower dementia risk is supported in general populations, but no reviewed study stratifies by amyloid status (the news's high-amyloid subgroup) or looks at tau/decline slope in amyloid-positive adults. The amyloid-conditioned effect is a gap.
Check it yourself: these 3 studies in the library →
race, frailty/vulnerability, health status and receipt of anti-amyloid therapy
What the news reported: minority and less healthy patients less likely to get lecanemab/donanemab (US patients).
Surfaced by Who gets Alzheimer's drugs? Race, vulnerability and health status shape access
(Medical Xpress, 2026-10-15) and 1 other news article.
What the library holds:
2 studies reviewed:
1 points the same way as the news; 1 touches the topic without reporting a direction.
What is missing: Only one reviewed record targets the news relationship directly and its stored summary has no results. Trial-eligibility data show minority participants fail amyloid criteria more often, which is a related but different access barrier. Health-status (frailty, comorbidity) as an access predictor was not found.
Check it yourself: these 2 studies in the library →
sleep-EEG-derived brain age and dementia risk
What the news reported: older-than-expected sleep brain age → sharply higher dementia risk (~7,000 adults).
Surfaced by AI can tell if your brain is aging faster than you are
(ScienceDaily, 2026-07-31).
What the library holds:
1 study reviewed:
1 points the same way as the news.
What is missing: Only one study addresses the relationship directly; everything else is older sleep/EEG-in-dementia description. Thin evidence base: a single study, so no independent replication in the library.
Check it yourself: these 1 study in the library →
sleep fragmentation (micro-awakenings) / poor sleep x glymphatic gene and AD genetic risk / AD brain changes
What the news reported: more micro-awakenings with higher AD genetic risk; poor sleep worse in some genotypes (healthy middle-aged adults).
Surfaced by Your sleep may be hiding an early clue to Alzheimer’s
(ScienceDaily, 2026-08-28) and 2 other news articles.
What the library holds:
4 studies reviewed:
3 point the same way as the news; 1 touches the topic without reporting a direction.
What is missing: Sleep fragmentation/quality → AD risk and amyloid markers is supported. The news's added idea (micro-awakenings scaling with AD GENETIC risk / genotype-dependent harm of poor sleep) was not found in the reviewed summaries - treat the genotype-interaction part as a gap.
Check it yourself: these 4 studies in the library →
cognitive speed-of-processing training and dementia incidence 20 years later
What the news reported: 5-6 weeks of training → ~25% lower dementia incidence at 20 years (adults 65+ (ACTIVE trial)).
Surfaced by Cognitive speed training linked to lower dementia incidence up to 20 years later
(Medical Xpress, 2026-02-28) and 2 other news articles.
What the library holds:
2 studies reviewed:
1 points the same way as the news; 1 touches the topic without reporting a direction.
What is missing: One study (ACTIVE 20-year follow-up, the same trial the news reports) supports the speed-training-specific effect; Cochrane reviews of computerised training for MCI find no incident-dementia data. Single trial source - no independent replication in library.
Check it yourself: these 2 studies in the library →
vitamin D supplementation and cognitive score
What the news reported: >=5,000 IU/day → ~13% better cognitive scores (older adults with MCI and sleep problems).
Surfaced by This common vitamin was linked to 13% better cognitive scores
(ScienceDaily, 2026-08-23).
What the library holds:
4 studies reviewed:
3 point the same way as the news; 1 touches the topic without reporting a direction.
What is missing: Evidence reviewed is observational/genetic on vitamin D LEVEL and cognition; none of the reviewed summaries reports a supplementation trial at the news's >=5,000 IU/day dose, so the dose-response/supplement direction is not tested here.
Check it yourself: these 4 studies in the library →
chronic infection (Chlamydia pneumoniae, herpes zoster) and cognitive decline / AD
What the news reported: persistent C. pneumoniae in eye/brain → worse AD (AD patients).
Surfaced by Common bacteria discovered in the eye linked to cognitive decline
(Medical Xpress, 2026-02-02).
What the library holds:
3 studies reviewed:
3 point the same way as the news.
What is missing: Chlamydia pneumoniae specifically is a GAP: the 6 free-text hits are pneumonia guidelines, a K. pneumoniae mouse study and a bioinformatics survey. The BROADER idea - infection (herpes, influenza etc.) → later dementia/decline - is supported, so only the C. pneumoniae-in-eye/brain framing is unmatched.
Check it yourself: these 3 studies in the library →
everyday cognitive leisure (reading, puzzles, socialising, active vs passive sitting) and preserved cognition
What the news reported: active leisure → better cognition; passive TV sitting → worse (older adults).
Surfaced by Reading, socializing and doing puzzles can help preserve cognitive health, large study shows
(Medical Xpress, 2026-10-01) and 1 other news article.
What the library holds:
4 studies reviewed:
4 point the same way as the news.
What is missing: Active/cognitive leisure → lower dementia is well supported (and already close to the existing prevention and risk-factor subjects, so low novelty). Passive TV specifically was not found; the reviewed sedentary-behaviour studies measure accelerometer or general sedentary time, not TV.
Check it yourself: these 4 studies in the library →
sedative/antipsychotic/mind-altering prescribing and falls, confusion, hospitalisation in dementia
What the news reported: more CNS-active prescribing → more falls/hospitalisation (seniors with dementia, long-term care).
Surfaced by Drugs are widely used to sedate dementia patients. Her sons wanted to keep her off them
(NPR, 2026-09-30) and 2 other news articles.
What the library holds:
4 studies reviewed:
4 point the same way as the news.
What is missing: Harm from antipsychotics/benzodiazepines in dementia is well supported, but the reviewed outcomes are mortality, stroke, pneumonia and kidney injury; the news's falls and hospitalisation outcomes were not shown in the reviewed summaries, and 'number of CNS-active drugs' (polypharmacy count) was not tested directly. Overlaps the existing treatments/clinical-safety areas, so low novelty.
- Points the same way as the news
Multiple adverse outcomes associated with antipsychotic use in people with dementia: population based matched cohort study
(BMJ, 2024)
From its summary: “antipsychotic use in people with dementia was associated with increased risks of many adverse outcomes, including pneumonia, acute kidney injury, venous thromboembolism, and stroke”
- Points the same way as the news
Benzodiazepine or Antipsychotic Use and Mortality Risk Among Patients With Dementia in Hospice Care
(JAMA Network Open, 2025)
From its summary: “starting benzodiazepines or antipsychotics was associated with higher 180-day mortality”
- Points the same way as the news
Antipsychotics, other psychotropics, and the risk of death in patients with dementia: number needed to harm
(JAMA psychiatry, 2015)
From its summary: “antipsychotic, valproic acid and antidepressant use in patients with dementia was associated with increased mortality risk over 180 days”
- Points the same way as the news
Cumulative use of strong anticholinergics and incident dementia: a prospective cohort study
(JAMA internal medicine, 2015)
From its summary: “cumulative use of strong anticholinergics over 10 years showed a dose-response relationship with dementia and Alzheimer's disease”
Check it yourself: these 4 studies in the library →
shingles (zoster) vaccination and dementia onset
What the news reported: vaccination → delayed dementia onset (older adults).
Surfaced by Shingles vaccination associated with delayed dementia onset in older adults
(Medical Xpress, 2026-02-02) and 1 other news article.
What the library holds:
5 studies reviewed:
4 point the same way as the news; 1 touches the topic without reporting a direction.
What is missing: Well covered by recent natural-experiment and cohort studies; two natural-experiment records are stored without results, so only the others can be counted. Because it overlaps the prevention category this is low-novelty, but the vaccination→dementia cross-cut (vaccines generally, zoster, influenza, pneumococcal) is new.
Check it yourself: these 5 studies in the library →
speech / language features and brain aging / dementia
What the news reported: speech-based clocks and narrowing vocabulary track cognitive decline years before diagnosis (older adults).
Surfaced by Your voice may reveal how fast and how well you're aging
(Medical Xpress, 2026-09-30) and 2 other news articles.
What the library holds:
4 studies reviewed:
4 point the same way as the news.
What is missing: Supporting studies are detection/prediction models and progression tracking; none in the reviewed set is the news's 'speech-based aging clock' or vocabulary-narrowing-over-decades finding, so the years-before-diagnosis timing is only partly covered.
Check it yourself: these 4 studies in the library →
isolated REM sleep behaviour disorder and later Parkinson's/DLB
What the news reported: iRBD → prodrome of Lewy body disease (iRBD patients).
Surfaced by Brain responses to heartbeat are altered in patients with iRBD
(Medical Xpress, 2026-10-05).
What the library holds:
3 studies reviewed:
3 point the same way as the news.
What is missing: Strongly supported and long established (iRBD → synucleinopathy), so low novelty vs the existing categories; the cross-cutting value is a tag that bridges sleep, biomarkers and Lewy-body studies.
Check it yourself: these 3 studies in the library →
obesity and high blood pressure (genetically proxied) and dementia
What the news reported: Mendelian randomisation: obesity & hypertension directly cause dementia (Denmark and UK).
Surfaced by Obesity and high blood pressure may directly cause dementia
(ScienceDaily, 2026-01-26) and 4 other news articles.
What the library holds:
2 studies reviewed:
1 points the same way as the news; 1 touches the topic without reporting a direction.
What is missing: Hypertension has genetic-causal support (UK Biobank MR). No reviewed MR study addresses obesity/BMI → dementia, so the obesity half of the news claim is a gap; a lipid MR was null, showing MR does not always confirm observational risk factors.
Check it yourself: these 2 studies in the library →
repetitive head impacts / CTE and dementia (as distinct cause)
What the news reported: CTE pathology → dementia; should be recognised as distinct cause (brain donors (BU CTE Center)).
Surfaced by Chronic traumatic encephalopathy should be recognized as a distinct cause of dementia, study finds
(Medical Xpress, 2026-01-27).
What the library holds:
3 studies reviewed:
1 points the same way as the news; 2 touch the topic without reporting a direction.
What is missing: The library covers TBI → dementia (single injuries, veterans) well, but repetitive head impact / CTE pathology as a distinct dementia cause is only touched by a review and a CSF biomarker comparison. The recognise-CTE-as-its-own-cause claim is not directly tested in the reviewed summaries.
Check it yourself: these 3 studies in the library →
We found studies that point both ways, or a mixed result, or the effect depends on timing or on who is studied. The news headline may be only half the picture.
low-dose aspirin x genetic profile and dementia incidence
What the news reported: aspirin → lower dementia only in a genetic subgroup (pharmacogenetic interaction) (older adults (Monash/ASPREE-type cohort)).
Surfaced by Genetic analysis reveals potential benefit of aspirin for reducing dementia risk
(Medical Xpress, 2026-09-29).
What the library holds:
2 studies reviewed:
1 points the same way as the news; 1 points the other way.
What is missing: Pharmacogenetic interaction (aspirin benefit confined to a genetic subgroup) is a GAP: a direct search for aspirin near APOE/genotype/polymorphism returns 0 studies. Overall-population aspirin evidence is mixed, which is exactly why a subgroup result would be interesting.
Check it yourself: these 2 studies in the library →
clonal hematopoiesis (blood-cancer-linked mutations) and AD risk / microglial inflammation
What the news reported: CH mutations → overly inflammatory brain immune cells → AD (adults).
Surfaced by Scientists discover a surprising cancer link to Alzheimer’s disease
(ScienceDaily, 2026-06-12).
What the library holds:
2 studies reviewed:
1 points the same way as the news; 1 points the other way.
What is missing: Direction conflict: the library's best study (Nature Medicine 2023, library record 15004) finds clonal hematopoiesis PROTECTIVE for Alzheimer's (OR 0.64), the opposite of the news-implied harmful direction. A 2026 medRxiv preprint links CH to Alzheimer's-like atrophy. Genuinely unresolved in the library.
Check it yourself: these 2 studies in the library →
GLP-1 agonists (semaglutide) and AD progression
What the news reported: oral semaglutide did NOT slow AD (null trial), despite biomarker change (early symptomatic AD (EVOKE)).
Surfaced by Pill form of semaglutide fails to slow Alzheimer's in large trial
(Medical Xpress, 2025-11-25) and 1 other news article.
What the library holds:
3 studies reviewed:
1 points the same way as the news; 1 has a mixed result; 1 touches the topic without reporting a direction.
What is missing: Phase 3 trial of oral semaglutide is null on clinical progression, matching the news. The 'despite biomarker change' part is not shown in the reviewed summary. Observational type-2-diabetes data point to lower dementia incidence (a different question: prevention in diabetics, not slowing established AD).
Check it yourself: these 3 studies in the library →
menopause timing / hormone therapy (estrogen-only) and dementia risk and AD neuropathology
What the news reported: estrogen-only HT later in life → fewer AD signs; menopause features predict dementia (women).
Surfaced by Menopause leaves a fingerprint that may predict dementia risk
(Medical Xpress, 2026-09-25) and 2 other news articles.
What the library holds:
7 studies reviewed:
1 points the same way as the news; 5 point the other way; 1 has a mixed result.
What is missing: The library is sharply split by TIMING and type: randomized trials and a 2025 meta-analysis are null/harmful for HT in older women, while observational timing analyses are protective only for use near menopause. Menopausal-feature (e.g. symptoms) → later dementia, the second half of the news idea, was not found in the reviewed hits.
Check it yourself: these 7 studies in the library →
sex, race, genetics and dementia risk after age 90
What the news reported: women and Black 90+ have higher risk (adults 90+).
Surfaced by Reaching 90 without dementia doesn’t mean you’re in the clear
(ScienceDaily, 2026-09-01).
What the library holds:
2 studies reviewed:
1 points the same way as the news; 1 points the other way.
What is missing: Two 90+ cohorts disagree on sex: LifeAfter90 (2026) finds higher risk in women, while the 90+ Study (2010) reports similar rates in men and women. Race differences rest on one cohort (n=805). 'Black higher than Asian' is what the summary states; a Black-versus-White contrast was not in the reviewed summaries.
Check it yourself: these 2 studies in the library →
statin / lipid-lowering use (incl. CETP inhibitors) and dementia incidence
What the news reported: early statin use after T2D diagnosis → ~15% lower dementia risk (people with type 2 diabetes (Denmark)).
Surfaced by Early statin use linked to 15% lower dementia risk
(ScienceDaily, 2026-09-08) and 1 other news article.
What the library holds:
5 studies reviewed:
3 point the same way as the news; 1 has a mixed result; 1 touches the topic without reporting a direction.
What is missing: No reviewed study isolates EARLY statin initiation after type-2-diabetes diagnosis, the news's specific population. Evidence is split between observational protection and a target-trial emulation that finds no benefit after year 1; statin RCTs in people who already have AD are null (not the same question).
Check it yourself: these 5 studies in the library →
transient ischemic attack and dementia risk
What the news reported: TIA → higher dementia risk (dementia > stroke rates long-term) (TIA patients).
Surfaced by Transient ischemic attack associated with higher dementia risk
(Healio, 2026-10-02).
What the library holds:
3 studies reviewed:
1 points the same way as the news; 1 points the other way; 1 has a mixed result.
What is missing: Directly conflicting recent cohorts: ARIC (2025) finds ~2x dementia risk after hospitalized TIA even excluding stroke; a 20-year cohort (n=297, 2025) finds no significant difference vs matched controls. The news's 'dementia exceeds stroke rates long-term' comparison was not found in the reviewed summaries.
Check it yourself: these 3 studies in the library →
caregiver tax credits / paid leave / respite and caregiver burden, outcomes
What the news reported: financial and respite support → lower caregiver burden (US family caregivers).
Surfaced by Connecticut Enacts Family Caregiver Tax Credit of Up to $2,000 a Year, Effective Tax Year 2027
(Connecticut Public (CT/WNPR); Office of Governor Ned Lamont press release, 2026-05-27) and 5 other news articles.
What the library holds:
2 studies reviewed:
1 points the same way as the news; 1 points the other way.
What is missing: No reviewed study tests direct financial support (payments, allowances) against caregiver burden. Respite evidence is thin and mixed: a Cochrane review finds no reliable benefit, while a small app-based respite intervention improved positive caregiving aspects. Financial-difficulty-moderator study describes association, not support effect.
Check it yourself: these 2 studies in the library →
loneliness and memory level vs. rate of memory decline
What the news reported: lonely → weaker baseline memory but NOT faster decline (cuts against common claim) (10,000+ Europeans over 7 years (SHARE-type)).
Surfaced by Lonely people have worse memory but don’t decline faster, study finds
(ScienceDaily, 2026-04-14).
What the library holds:
4 studies reviewed:
1 points the same way as the news; 3 point the other way.
What is missing: The library is split on the news's claim (lonely → weaker baseline memory but NOT faster decline): a 2025 study links childhood loneliness to FASTER decline, a meta-analysis found loneliness not significantly associated with dementia risk, and the cohort studies link loneliness to higher dementia risk. Baseline-level vs rate-of-change is not separated in the reviewed summaries.
Check it yourself: these 4 studies in the library →
cerebral amyloid angiopathy and 5-year dementia risk
What the news reported: CAA → ~4x dementia risk, regardless of stroke (~2 million older adults).
Surfaced by A silent brain disease can quadruple dementia risk
(ScienceDaily, 2026-02-01) and 1 other news article.
What the library holds:
2 studies reviewed:
1 points the same way as the news; 1 has a mixed result.
What is missing: CAA is linked to tau and cognitive decline, but the ~4x dementia-risk-regardless-of-stroke figure was not reproduced in reviewed summaries; the 2026 outpatient cohort found the CAA-dementia association depended on the criteria version and was not significant after APOE e4 adjustment. This overlaps existing imaging/biomarkers/genetics categories, so low novelty.
Check it yourself: these 2 studies in the library →
hearing loss / visual impairment and hearing aid use and dementia risk
What the news reported: hearing loss >2x dementia odds; aids may cut risk without improving test scores (older adults).
Surfaced by Why hearing loss deserves earlier attention in dementia prevention
(Medical Xpress, 2026-10-06) and 2 other news articles.
What the library holds:
3 studies reviewed:
2 point the same way as the news; 1 points the other way.
What is missing: Hearing loss → dementia/cognitive decline is well supported observationally and the hearing-aid association is supported by meta-analysis; the ACHIEVE RCT was null overall for 3-year cognitive change (effect differed by cohort). Hearing aids reducing risk WITHOUT test-score gains is partly reflected (observational HR 0.81 vs only a 3% short-term score change) but the news framing itself is not tested directly.
Check it yourself: these 3 studies in the library →
copper / zinc levels and amyloid aggregation
What the news reported: metal ions modulate amyloid build-up (modelling / lab).
Surfaced by The hidden math of Alzheimer's could point to new treatments
(ScienceDaily, 2026-10-11) and 2 other news articles.
What the library holds:
4 studies reviewed:
3 point the same way as the news; 1 points the other way.
What is missing: Metal-AD associations are supported by small and mostly observational studies (blood copper, brain iron, cortical zinc); a copper-supplement pilot found no cognitive effect. 'Modulate amyloid build-up' (mechanism) is only seen as correlation with amyloid load, not causal. Overlaps biomarkers/imaging categories.
Check it yourself: these 4 studies in the library →
MIND / healthy dietary pattern and arterial health / cognition
What the news reported: MIND diet protects cognition via arteries (older adults).
Surfaced by How the MIND diet protects aging brains
(Medical Xpress, 2026-09-25) and 2 other news articles.
What the library holds:
2 studies reviewed:
1 points the same way as the news; 1 points the other way.
What is missing: MIND/Mediterranean → cognition is split between observational benefit and a null 3-year RCT; the vascular-pathway (arterial) mediation named in the news was not found in reviewed summaries - a mediation gap. Close to the existing prevention category, so low novelty on the exposure-outcome pair itself; the mediator is the new angle.
Check it yourself: these 2 studies in the library →
omega-3 / fish oil supplementation and cognition / AD brain changes
What the news reported: omega-3 reaches brain but no cognitive benefit (null) (older adults, 2-year trial).
Surfaced by Millions take omega-3 fish oil for brain health but a new study found no benefit
(ScienceDaily, 2026-06-29).
What the library holds:
3 studies reviewed:
2 point the same way as the news; 1 points the other way.
What is missing: Direction implied by news is a NULL on cognition despite brain uptake. RCTs reviewed are null, consistent with the news; observational cohorts point to benefit - a known observational/trial split that a summary cannot adjudicate. 'Brain uptake' (the other variable in the news) was not found in reviewed summaries.
Check it yourself: these 3 studies in the library →
alcohol intake and brain health / dementia
What the news reported: no clearly safe amount (adults).
Surfaced by Alcohol and the Brain; The Next Alzheimer's Frontier; Mice With Human Brain Cells
(MedPage Today, 2026-09-29).
What the library holds:
4 studies reviewed:
2 point the same way as the news; 2 point the other way.
What is missing: Directly conflicting: observational cohorts show lower dementia risk at light-moderate drinking (J/U-shaped), while the 2026 Mendelian randomisation analysis suggests risk rises steadily with intake - the news's 'no safe amount' is supported only by the genetic evidence. Summaries cannot resolve sick-quitter/selection bias.
Check it yourself: these 4 studies in the library →
late-life depression and neurodegenerative brain disease
What the news reported: late-life depression → early sign of brain disease (seniors).
Surfaced by Depression might signal brain disease risk among seniors
(Medical Xpress, 2026-01-15).
What the library holds:
4 studies reviewed:
2 point the same way as the news; 1 points the other way; 1 has a mixed result.
What is missing: Mixed: trajectory and Lewy-body data support depression as an early manifestation, whereas late-life-depression imaging studies find LESS amyloid and no excess tau, arguing against an Alzheimer-pathology prodrome. A summary cannot show which brain disease the depression heralds.
Check it yourself: these 4 studies in the library →
The studies we reviewed that report a direction point the other way from the news.