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.

This page is alzhub.org's plain-English summary of a published study, not the paper itself. It is generated from the record we hold for this study, sourced and linked below — check the original for the full text and methods.

✓ Peer-reviewed alzhub usefulness score 53 out of 100. How common it is

Topic: Risk, prevention and care in population studies

Plain-language summary

This Viewpoint discusses age-specific dementia prevalence rates, their decline during 40 years, and the subsequent effect on dementia incidence.

Cite this study APA, Vancouver, BibTeX · download .bib or .ris

APA 7th

Stallard, P. J. E., Ukraintseva, S. V., & Doraiswamy, P. M. (2025). Changing Story of the Dementia Epidemic. JAMA. https://doi.org/10.1001/jama.2025.1897

Vancouver

Stallard PJE, Ukraintseva SV, Doraiswamy PM. Changing Story of the Dementia Epidemic. JAMA. 2025. doi:10.1001/jama.2025.1897. PMID: 40072416.

BibTeX

@article{stallard2025-40072416,
  author  = {Stallard, P. J. Eric and Ukraintseva, Svetlana V. and Doraiswamy, Pudugramam Murali},
  title   = {{Changing Story of the Dementia Epidemic}},
  journal = {JAMA},
  year    = {2025},
  doi     = {10.1001/jama.2025.1897},
  pmid    = {40072416},
  url     = {https://doi.org/10.1001/jama.2025.1897}
}

Built from the record alzhub holds for this paper, not looked up. Volume, issue and page numbers are not held in the record. Check the citation against the original before you use it.

Key findings

Why it matters

This Viewpoint describes how age-specific dementia prevalence rates have declined over 40 years and how that decline affects dementia incidence. It does not report any treatment, cure, or prevention intervention.

Study details

How this study scored 53/100
How this study's score is builtJournal tier 10 of 10; Journal's citation record 4 of 4; Study design 0 of 12; Strength of evidence 1 of 5; Peer-review validation 10 of 10; How recent 4 of 5; Sample size 0 of 4; Effect reported 0 of 3; Studied in people 0 of 3; Randomized / blinded 0 of 2; Times cited 3 of 7; Citations per year 2 of 5; Impact for its field and year 4 of 6; Cited by studies here 2 of 6; Still being cited 2 of 4; Senior author's track record 4 of 4; Institution's track record 2 of 3; Multicenter collaboration 1 of 3; Indexed in PubMed 2 of 2; Free to read 2 of 2. Total 53 of 100.53 of 100 points earned47 not earned

Published in a top-tier journal. Scored zero for study design, sample size, effect reported, studied in people and randomized / blinded because the record does not state it.

ComponentPointsWhy
Journal tier 10 / 10 Tier 1 — top-tier general journal (JAMA)
Journal's citation record 4 / 4 JAMA: journal h-index 1,011 (OpenAlex, 2026-10-29)
Study design 0 / 12 No study design recorded — scores zero, not guessed (not stated in the record — scored 0)
Strength of evidence 1 / 5 Rated “low” in our summary
Peer-review validation 10 / 10 Peer-reviewed. Published as an article in a named peer-reviewed journal.
How recent 4 / 5 2025 — within 3 year(s) of the newest study here
Sample size 0 / 4 Participant count not stated — scores zero (not stated in the record — scored 0)
Effect reported 0 / 3 No effect size reported — scores zero (not stated in the record — scored 0)
Studied in people 0 / 3 Not stated whether this was studied in people — scores zero (not stated in the record — scored 0)
Randomized / blinded 0 / 2 No randomization or blinding stated — scores zero (not stated in the record — scored 0)
Times cited 3 / 7 Cited 20 times (OpenAlex, 2026-10-10)
Citations per year 2 / 5 6.7 citations a year over 3 year(s) since 2025
Impact for its field and year 4 / 6 Cited 12.7× the average for papers of its field and year (OpenAlex FWCI)
Cited by studies here 2 / 6 Cited by 5 other studies in this library
Still being cited 2 / 4 Cited 20 times in 2024–2026 (2026 still in progress; OpenAlex)
Senior author's track record 4 / 4 Last-listed author Pudugramam Murali Doraiswamy: h-index 105 (OpenAlex, whole career)
Institution's track record 2 / 3 Duke University: institution h-index 1,541 (OpenAlex)
Multicenter collaboration 1 / 3 OpenAlex lists 2 institution(s) in 1 country
Indexed in PubMed 2 / 2 Indexed in PubMed (PMID 40072416)
Free to read 2 / 2 Free to read
Total 53 / 100 —

What each of these 20 components measures, and what this score is not →

Read the original

Full text: free to read — OpenAlex lists this copy as free to read: the link above (checked 6 Feb 1020).

Studies in the library that share something with this one. The line above each title says what.

Studies this one cites

Referenced by this study and also in the alzhub library, so you can read them here.

Later studies that cite this one

5 studies in the alzhub library list this one in their references.

Related studies in How common it is from nearby years

Also tagged “prevalence”

1,223 studies in the library carry the topic tag “prevalence”; these are this study's neighbours in a fixed, alphabetical-by-hash tour of them, not the closest in content. All 1,223 tagged studies.

Studies sharing this one's topic tags

Similar studies

More on How common it is

See all studies in How common it is →