Home › Research › Prevention and risk
Associations between the EAT-Lancet planetary health diet and incident dementia
Jessica Samuelsson, Isabelle Glans, Anna Stubbendorff, Ulrika Ericson, Sebastian Palmqvist, Oskar Hansson, Emily Sonestedt. The Journal of Prevention of Alzheimer s Disease, 2025-04-12
Topic: Risk, prevention and care in population studies
With one of the scores, higher adherence to the EAT-Lancet diet was associated with a reduced risk of AD and all-cause dementia. Moreover, the results suggest an interplay between the EAT-Lancet diet and APOE ε4 status. A risk-reducing effect was observed among APOE ε4 non-carriers with three of the scores in relation to AD, and with five of the scores in relation to all-cause dementia. No associations were observed among APOE ε4 carriers, or in relation to VaD. The results indicate a risk reducing effect of adhering to the EAT-Lancet diet among APOE ε4 non-carriers, and no negative effects on dementia risk were detected. Future studies should consider the potentially modifying effect of APOE ε4 status, and the implications of methodological differences in measuring adherence to the EAT-Lancet diet.
Key findings
- With one of the scores, higher adherence to the EAT-Lancet diet was associated with a reduced risk of AD and all-cause dementia.
- Moreover, the results suggest an interplay between the EAT-Lancet diet and APOE ε4 status.
- A risk-reducing effect was observed among APOE ε4 non-carriers with three of the scores in relation to AD, and with five of the scores in relation to all-cause dementia.
- No associations were observed among APOE ε4 carriers, or in relation to VaD.
- The results indicate a risk reducing effect of adhering to the EAT-Lancet diet among APOE ε4 non-carriers, and no negative effects on dementia risk were detected.
Why it matters
This study found that higher adherence to the EAT-Lancet diet was associated with reduced risk of Alzheimer's disease and all-cause dementia among APOE ε4 non-carriers, but no associations were observed among APOE ε4 carriers. The findings are observational and do not establish causation.
New to this subject? Start with our plain-English guide: Prevention →
Study details
- Participants25,898
- Evidence strengthLow
How this study scored 49/100
Published in a peer-reviewed journal. Scored zero for study design, effect reported and randomised / blinded because the record does not state it.
| Component | Points | Why |
|---|---|---|
| Journal tier | 7 / 10 | Tier 3 — peer-reviewed journal (The Journal of Prevention of Alzheimer s Disease) |
| Journal's citation record | 0 / 4 | The Journal of Prevention of Alzheimer s Disease: journal h-index 63 (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 | 4 / 4 | 25,898 participants |
| Effect reported | 0 / 3 | No effect size reported — scores zero (not stated in the record — scored 0) |
| Studied in people | 3 / 3 | Studied in people (participant count stated) |
| Randomised / blinded | 0 / 2 | No randomisation or blinding stated — scores zero (not stated in the record — scored 0) |
| Times cited | 2 / 7 | Cited 11 times (OpenAlex, 2026-10-10) |
| Citations per year | 2 / 5 | 3.7 citations a year over 3 year(s) since 2025 |
| Impact for its field and year | 4 / 6 | Cited 9.3× the average for papers of its field and year (OpenAlex FWCI) |
| Cited by studies here | 1 / 6 | Cited by 2 other studies in this library |
| Still being cited | 1 / 4 | Cited 11 times in 2024–2026 (2026 still in progress; OpenAlex) |
| Senior author's track record | 3 / 4 | Last-listed author Emily Sonestedt: h-index 70 (OpenAlex, whole career) |
| Institution's track record | 1 / 3 | Lund University: institution h-index 1,119 (OpenAlex) |
| Multi-centre collaboration | 2 / 3 | OpenAlex lists 4 institution(s) in 1 country |
| Indexed in PubMed | 2 / 2 | Indexed in PubMed (PMID 40222839) |
| Free to read | 2 / 2 | Free to read |
| Total | 49 / 100 | — |
What each of these 20 components measures, and what this score is not →
Read the original
- DOI: 10.1016/j.tjpad.2025.100166
- PubMed: 40222839
- Original source →
- Free full text: The Journal of Prevention of Alzheimer s Disease →
Full text: free to read — OpenAlex lists this copy as free to read: the link above (checked 6 Feb 1020).
Cite this study APA, Vancouver, BibTeX · download .bib or .ris
Built from the record alzhub holds for this paper, not looked up. Volume, issue and page numbers are not held in the record. The record names 7 authors; APA and Vancouver show the first six, BibTeX and the downloads carry all of them. Check the citation against the original before you use it.
APA 7th
Samuelsson, J., Glans, I., Stubbendorff, A., Ericson, U., Palmqvist, S., Hansson, O., et al. (2025). Associations between the EAT-Lancet planetary health diet and incident dementia. The Journal of Prevention of Alzheimer s Disease. https://doi.org/10.1016/j.tjpad.2025.100166
Vancouver
Samuelsson J, Glans I, Stubbendorff A, Ericson U, Palmqvist S, Hansson O, et al. Associations between the EAT-Lancet planetary health diet and incident dementia. The Journal of Prevention of Alzheimer s Disease. 2025. doi:10.1016/j.tjpad.2025.100166. PMID: 40222839.
BibTeX
@article{samuelsson2025-40222839,
author = {Samuelsson, Jessica and Glans, Isabelle and Stubbendorff, Anna and Ericson, Ulrika and Palmqvist, Sebastian and Hansson, Oskar and Sonestedt, Emily},
title = {{Associations between the EAT-Lancet planetary health diet and incident dementia}},
journal = {The Journal of Prevention of Alzheimer s Disease},
year = {2025},
doi = {10.1016/j.tjpad.2025.100166},
pmid = {40222839},
url = {https://doi.org/10.1016/j.tjpad.2025.100166}
}
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
2 studies in the alzhub library list this one in their references.
Related studies in Prevention and risk
Also tagged “biobank”
1,084 studies in the library carry the topic tag “biobank”; these are this study's neighbours in a fixed, alphabetical-by-hash tour of them, not the closest in content. All 1,084 tagged studies.