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The deprivation cascade hypothesis of dementia
Timothy P Daly. Aging and Health Research, 2025-01-01
Topic: Risk, prevention and care in population studies
• Brain health depends on certain environmental resources of which socioeconomically disadvantaged people in particular are deprived. • Resource deprivation may increase dementia risk due to reduced attainment for deprived populations. • Improving attainment across the lifetime for disadvantaged individuals should be a public health priority for dementia prevention. There are significant disparities in dementia risk and care burden in the global population. This review provides evidence of the effects of deprivation, understood as the absence of environmental resources required for brain health. Deprivation increases dementia risk and care burden due to biological, environmental, and social dimensions of risk. It is hypothesized that the major mediator between deprivation and dementia is reduced educational and professional attainment. It argues for structural interventions centered around improved attainment, particularly for girls and women across the globe, improved funding for primary and social care, and a rights-based approach to brain health to improve access to these resources and thereby reduce dementia disparities.
Cite this study APA, Vancouver, BibTeX · download .bib or .ris
APA 7th
Daly, T. P. (2025). The deprivation cascade hypothesis of dementia. Aging and Health Research. https://doi.org/10.1016/j.ahr.2024.100219
Vancouver
Daly TP. The deprivation cascade hypothesis of dementia. Aging and Health Research. 2025. doi:10.1016/j.ahr.2024.100219.
BibTeX
@article{daly2025-7fbf300c,
author = {Daly, Timothy P},
title = {{The deprivation cascade hypothesis of dementia}},
journal = {Aging and Health Research},
year = {2025},
doi = {10.1016/j.ahr.2024.100219},
url = {https://doi.org/10.1016/j.ahr.2024.100219}
}
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Key findings
- There are significant disparities in dementia risk and care burden in the global population.
Why it matters
This review hypothesizes that deprivation of environmental resources increases dementia risk, with reduced educational and professional attainment as a major mediator. It argues for structural interventions to improve attainment and reduce dementia disparities, but does not test a specific treatment or cure.
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Study details
- Evidence strengthLow
How this study scored 33/100
Published in a peer-reviewed journal. Scored zero for study design, sample size, effect reported, studied in people and randomised / blinded because the record does not state it.
| Component | Points | Why |
|---|---|---|
| Journal tier | 7 / 10 | Tier 3 — peer-reviewed journal (Aging and Health Research) |
| Journal's citation record | 0 / 4 | Aging and Health Research: journal h-index 20 (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) |
| Randomised / blinded | 0 / 2 | No randomisation or blinding stated — scores zero (not stated in the record — scored 0) |
| Times cited | 1 / 7 | Cited 2 times (OpenAlex, 2026-10-10) |
| Citations per year | 0 / 5 | 0.7 citations a year over 3 year(s) since 2025 |
| Impact for its field and year | 2 / 6 | Cited 1.3× the average for papers of its field and year (OpenAlex FWCI) |
| Cited by studies here | 0 / 6 | No other study in this library cites it |
| Still being cited | 0 / 4 | Cited 2 times in 2024–2026 (2026 still in progress; OpenAlex) |
| Senior author's track record | 1 / 4 | Last-listed author Timothy P Daly: h-index 13 (OpenAlex, whole career) |
| Institution's track record | 2 / 3 | Inserm: institution h-index 1,988 (OpenAlex) |
| Multi-centre collaboration | 2 / 3 | OpenAlex lists 4 institution(s) in 2 countries |
| Indexed in PubMed | 1 / 2 | Not in PubMed, but has a DOI |
| Free to read | 2 / 2 | Free to read |
| Total | 33 / 100 | — |
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