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UK Biobank data demonstrate long-term exposure to floods is a risk factor for incident dementia
Yao Yu Wu, Rongbin Xu, Danijela Gašević, Zhengyu Yang, Pei Yu, Bo Wen, Yanming Liu, Guowei Zhou et al.. Communications Medicine, 2025-03-10
Topic: Risk, prevention and care in population studies
In the fully adjusted model, the cumulative odds ratios (OR) are 1.28 (95% confidence interval [CI]: 1.25–1.31) for any dementia, 1.44 (95% CI: 1.36–1.53) for Alzheimer’s disease and 1.65 (95% CI: 1.48–1.83) for vascular dementia, associated with per unit increase in annual cumulative flooding exposure over lag 0–6 years. Participants under the age of 65 years (OR: 1.39, 95% CI: 1.33–1.46) and female participants (OR: 1.41, 95% CI: 1.33–1.49) exhibit a higher risk of incident dementia compared to those aged 65 years and older (OR: 1.25, 95% CI: 1.21–1.28) and male participants (OR: 1.26, 95% CI: 1.23–1.30), respectively. This study provides robust epidemiological evidence supporting the link between floods and an increased risk of dementia. These findings enhance the understanding of the long-term consequences of flood exposure. Using health data from a large population, we found that the risk of dementia was highest in the year of flooding and gradually decreased over six years. People under 65 and women were at higher risk. The study also showed that flooding was linked to two different types of dementia called Alzheimer’s disease and vascular dementia. These findings highlight the need for better public health strategies to protect people in flood-prone areas and reduce long-term health risks. Flooding exposure is linked to an elevated risk of incident dementia, with significant variations observed across age groups and between sexes.
Cite this study APA, Vancouver, BibTeX · download .bib or .ris
APA 7th
Wu, Y. Y., Xu, R., Gašević, D., Yang, Z., Yu, P., Wen, B., et al. (2025). UK Biobank data demonstrate long-term exposure to floods is a risk factor for incident dementia. Communications Medicine. https://doi.org/10.1038/s43856-025-00771-4
Vancouver
Wu YY, Xu R, Gašević D, Yang Z, Yu P, Wen B, et al. UK Biobank data demonstrate long-term exposure to floods is a risk factor for incident dementia. Communications Medicine. 2025. doi:10.1038/s43856-025-00771-4. PMID: 40065151.
BibTeX
@article{wu2025-40065151,
author = {Wu, Yao Yu and Xu, Rongbin and Gašević, Danijela and Yang, Zhengyu and Yu, Pei and Wen, Bo and Liu, Yanming and Zhou, Guowei and others},
title = {{UK Biobank data demonstrate long-term exposure to floods is a risk factor for incident dementia}},
journal = {Communications Medicine},
year = {2025},
doi = {10.1038/s43856-025-00771-4},
pmid = {40065151},
url = {https://doi.org/10.1038/s43856-025-00771-4}
}
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's author list ends in “et al.”, so not every author is named. Check the citation against the original before you use it.
Key findings
- In the fully adjusted model, the cumulative odds ratios (OR) are 1.28 (95% confidence interval [CI]: 1.25–1.31) for any dementia, 1.44 (95% CI: 1.36–1.53) for Alzheimer’s disease and 1.65 (95% CI: 1.48–1.83) for vascular dementia, associated with per unit increase in annual cumulative flooding exposure over lag 0–6 years.
- Participants under the age of 65 years (OR: 1.39, 95% CI: 1.33–1.46) and female participants (OR: 1.41, 95% CI: 1.33–1.49) exhibit a higher risk of incident dementia compared to those aged 65 years and older (OR: 1.25, 95% CI: 1.21–1.28) and male participants (OR: 1.26, 95% CI: 1.23–1.30), respectively.
- This study provides robust epidemiological evidence supporting the link between floods and an increased risk of dementia.
- These findings enhance the understanding of the long-term consequences of flood exposure.
- Using health data from a large population, we found that the risk of dementia was highest in the year of flooding and gradually decreased over six years.
Why it matters
In this UK Biobank analysis, greater cumulative flood exposure was associated with higher odds of any dementia, Alzheimer's disease, and vascular dementia, with the highest risk in the year of flooding. The authors say these findings highlight the need for public health strategies to protect people in flood-prone areas.
Study details
- Study designcase-control study
- Effect sizeOR: 1.39; OR: 1.41; OR: 1.25
- Evidence strengthModerate
How this study scored 46/100
Published in a peer-reviewed journal, and it is a case-control study. Scored zero for sample size, 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 (Communications Medicine) |
| Journal's citation record | 0 / 4 | Communications Medicine: journal h-index 55 (OpenAlex, 2026-10-29) |
| Study design | 6 / 12 | A case-control study |
| Strength of evidence | 3 / 5 | Rated “moderate” 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 | 3 / 3 | Effect reported with a statistic (interval, p-value, ratio or similar) |
| 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 1 times (OpenAlex, 2026-10-10) |
| Citations per year | 0 / 5 | 0.3 citations a year over 3 year(s) since 2025 |
| Impact for its field and year | 1 / 6 | Cited 0.6× 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 1 times in 2024–2026 (2026 still in progress; OpenAlex) |
| Senior author's track record | 4 / 4 | Last-listed author Yuming Guo: h-index 120 (OpenAlex, whole career) |
| Institution's track record | 1 / 3 | University of Edinburgh: institution h-index 1,378 (OpenAlex) |
| Multi-centre collaboration | 2 / 3 | OpenAlex lists 4 institution(s) in 3 countries |
| Indexed in PubMed | 2 / 2 | Indexed in PubMed (PMID 40065151) |
| Free to read | 2 / 2 | Free to read |
| Total | 46 / 100 | — |
What each of these 20 components measures, and what this score is not →
Read the original
- DOI: 10.1038/s43856-025-00771-4
- PubMed: 40065151
- Original source →
- Free full text: Communications Medicine →
Full text: free to read — OpenAlex lists this copy as free to read: the link above (checked 6 Feb 1020).
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