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55/100

✓ Peer-reviewed alzhub usefulness score 55 out of 100. Prevention trials

Topic: Risk, prevention and care in population studies

There were 656 deaths, 1585 incidents of CVD and 165 dementia diagnoses during 17.2 years of follow-up. For all-cause mortality, HRs comparing the highest (best) to lowest quarter of diet quality were 0.60 (95% CI: 0.46, 0.78; P < 0.001) for the ARFS, 0.64 (95% CI: 0.47, 0.87; P = 0.005) for the MDFS, and 0.67 (95% CI: 0.47, 0.95; P = 0.02) when comparing a diet higher in protein intake and lower milk/yogurt intake to diets higher in discretionary foods and lower in fruit and vegetables. There were no associations between diet indices with CVD and dementia outcomes or influence of SES on findings. Better quality diets were associated with a lower risk of all-cause mortality, and there were no associations identified between diet and CVD or dementia outcomes. These findings provide insights into the potential benefits of improving diet quality of Australian women to improve longevity.

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

APA 7th

McKenzie, B. L., Cavenagh, D., Collins, C. E., Harris, K., & Woodward, M. (2025). Diet Quality Indices, All-Cause Mortality, Cardiovascular Disease, and Dementia—Outcomes from the Australian Longitudinal Study on Women’s Health. Journal of Nutrition. https://doi.org/10.1016/j.tjnut.2025.03.003

Vancouver

McKenzie BL, Cavenagh D, Collins CE, Harris K, Woodward M. Diet Quality Indices, All-Cause Mortality, Cardiovascular Disease, and Dementia—Outcomes from the Australian Longitudinal Study on Women’s Health. Journal of Nutrition. 2025. doi:10.1016/j.tjnut.2025.03.003. PMID: 40185204.

BibTeX

@article{mckenzie2025-40185204,
  author  = {McKenzie, Briar Louise and Cavenagh, Dominic and Collins, Clare Elizabeth and Harris, Katie and Woodward, Mark},
  title   = {{Diet Quality Indices, All-Cause Mortality, Cardiovascular Disease, and Dementia—Outcomes from the Australian Longitudinal Study on Women’s Health}},
  journal = {Journal of Nutrition},
  year    = {2025},
  doi     = {10.1016/j.tjnut.2025.03.003},
  pmid    = {40185204},
  url     = {https://doi.org/10.1016/j.tjnut.2025.03.003}
}

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Key findings

There were 656 deaths, 1585 incidents of CVD and 165 dementia diagnoses during 17.2 years of follow-up.
For all-cause mortality, HRs comparing the highest (best) to lowest quarter of diet quality were 0.60 (95% CI: 0.46, 0.78; P < 0.001) for the ARFS, 0.64 (95% CI: 0.47, 0.87; P = 0.005) for the MDFS, and 0.67 (95% CI: 0.47, 0.95; P = 0.02) when comparing a diet higher in protein intake and lower milk/yogurt intake to diets higher in discretionary foods and lower in fruit and vegetables.
There were no associations between diet indices with CVD and dementia outcomes or influence of SES on findings.
Better quality diets were associated with a lower risk of all-cause mortality, and there were no associations identified between diet and CVD or dementia outcomes.
These findings provide insights into the potential benefits of improving diet quality of Australian women to improve longevity.

Why it matters

In this longitudinal study of Australian women, better diet quality was linked to lower all-cause mortality, but there were no associations between diet indices and dementia outcomes. It does not show that diet quality prevents dementia.

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Study details

Study designlongitudinal study
Participants9,584
Evidence strengthModerate

How this study scored 55/100

Published in a peer-reviewed journal, and it is a longitudinal study following the same people over time. Scored zero for effect reported and randomized / blinded because the record does not state it.

Component	Points	Why
Journal tier	7 / 10	Tier 3 — peer-reviewed journal (Journal of Nutrition)
Journal's citation record	3 / 4	Journal of Nutrition: journal h-index 372 (OpenAlex, 2026-10-29)
Study design	7 / 12	A longitudinal study following the same people over time
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	3 / 4	9,584 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)
Randomized / blinded	0 / 2	No randomization 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 1.7× 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	4 / 4	Last-listed author Mark Woodward: h-index 173 (OpenAlex, whole career)
Institution's track record	2 / 3	Imperial College London: institution h-index 1,744 (OpenAlex)
Multicenter collaboration	2 / 3	OpenAlex lists 5 institution(s) in 2 countries
Indexed in PubMed	2 / 2	Indexed in PubMed (PMID 40185204)
Free to read	2 / 2	Free to read
Total	55 / 100	—

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