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53/100

✓ Peer-reviewed alzhub usefulness score 53 out of 100. Prevention and risk

Topic: Risk, prevention and care in population studies

Time is an under-recognised social determinant of brain health, and is potentially as important as education or income for dementia risk. Temporal inequity refers to the unequal distribution of discretionary time owing to structural conditions shaping daily life. Temporal inequity encompasses insufficient time for rest, misaligned biological rhythms, fragmented leisure, and the encroachment of work or digital demands into personal time. Time poverty is a measurable manifestation, denoting insufficient time for brain health, disproportionately affecting structurally disadvantaged populations and exacerbated by performance-driven cultures. Although evidence for modifiable risk factors of dementia, such as sleep, physical activity, nutrition, and social engagement, is strong, adopting healthy behaviours requires time. In this Personal View, we integrate insights from epidemiology, neuroscience, and time-use research to argue that addressing temporal inequity is essential for brain health and dementia risk reduction. We call for temporal justice through research and policies that recognise time as both a resource and a site of inequity in ageing and dementia. Accordingly, we outline future research directions, including the development of metrics for temporal inequity, longitudinal studies linking time-use patterns to brain health outcomes, and intervention research to evaluate policies that expand equitable access to time.

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

APA 7th

Röhr, S., Reppermund, S., Matison, A. P., Samtani, S. R., & Sachdev, P. S. (2025). Making time for brain health: recognising temporal inequity in dementia risk reduction. The Lancet Healthy Longevity. https://doi.org/10.1016/j.lanhl.2025.100768

Vancouver

Röhr S, Reppermund S, Matison AP, Samtani SR, Sachdev PS. Making time for brain health: recognising temporal inequity in dementia risk reduction. The Lancet Healthy Longevity. 2025. doi:10.1016/j.lanhl.2025.100768. PMID: 41101324.

BibTeX

@article{rohr2025-41101324,
  author  = {Röhr, Susanne and Reppermund, Simone and Matison, Annabel P. and Samtani, Suraj Rajesh and Sachdev, Perminder Singh},
  title   = {{Making time for brain health: recognising temporal inequity in dementia risk reduction}},
  journal = {The Lancet Healthy Longevity},
  year    = {2025},
  doi     = {10.1016/j.lanhl.2025.100768},
  pmid    = {41101324},
  url     = {https://doi.org/10.1016/j.lanhl.2025.100768}
}

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Key findings

Time poverty is a measurable manifestation, denoting insufficient time for brain health, disproportionately affecting structurally disadvantaged populations and exacerbated by performance-driven cultures.
Although evidence for modifiable risk factors of dementia, such as sleep, physical activity, nutrition, and social engagement, is strong, adopting healthy behaviours requires time.
In this Personal View, we integrate insights from epidemiology, neuroscience, and time-use research to argue that addressing temporal inequity is essential for brain health and dementia risk reduction.
We call for temporal justice through research and policies that recognise time as both a resource and a site of inequity in ageing and dementia.
Accordingly, we outline future research directions, including the development of metrics for temporal inequity, longitudinal studies linking time-use patterns to brain health outcomes, and intervention research to evaluate policies that expand equitable access to time.

Why it matters

This personal view argues that lack of discretionary time, or temporal inequity, is an under-recognised barrier to adopting dementia risk-reducing behaviours such as sleep, physical activity, nutrition, and social engagement. It is a conceptual argument calling for research and policy, not a study showing that any intervention prevents dementia.

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Study details

Study designlongitudinal study
Evidence strengthModerate

How this study scored 53/100

Published in a leading specialty journal, and it is a longitudinal study following the same people over time. Scored zero for sample size, effect reported, studied in people and randomised / blinded because the record does not state it.

Component	Points	Why
Journal tier	9 / 10	Tier 2 — leading specialty journal (The Lancet Healthy Longevity)
Journal's citation record	1 / 4	The Lancet Healthy Longevity: journal h-index 78 (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	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	2 / 7	Cited 5 times (OpenAlex, 2026-10-10)
Citations per year	1 / 5	1.7 citations a year over 3 year(s) since 2025
Impact for its field and year	3 / 6	Cited 3.2× the average for papers of its field and year (OpenAlex FWCI)
Cited by studies here	1 / 6	Cited by 1 other studies in this library
Still being cited	1 / 4	Cited 5 times in 2024–2026 (2026 still in progress; OpenAlex)
Senior author's track record	4 / 4	Last-listed author Perminder Singh Sachdev: h-index 147 (OpenAlex, whole career)
Institution's track record	1 / 3	UNSW Sydney: institution h-index 1,101 (OpenAlex)
Multi-centre collaboration	2 / 3	OpenAlex lists 4 institution(s) in 2 countries
Indexed in PubMed	2 / 2	Indexed in PubMed (PMID 41101324)
Free to read	2 / 2	Free to read
Total	53 / 100	—

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

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