ArticleThe Lancet regional health. Western Pacific2026
The potential for dementia prevention in Japan: a population attributable fraction calculation for 14 modifiable risk factors and estimates of the impact of risk factor reductions.
Article in The Lancet regional health. Western Pacific, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
2 citing papers in PubMed.
- Residential Greenness and Incident Chronic Rhinosinusitis After SARS-CoV-2 Infection in South Korea: A Nationwide Cohort Study.Clinical and experimental allergy : journal of the British Society for Allergy and Clinical Immunology · 2026Article
- Improving Home Care Safety Among Informal Caregivers Through Immersive Digital Simulation: Secondary Analysis of 3 Coordinated Intervention Studies.Journal of medical Internet research · 2026Observational
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
2 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Background: As dementia prevalence increases globally, preventive strategies targeting modifiable risk factors have become increasingly important. In Japan, with its super-ageing society, dementia is the leading cause of increased disability-adjusted life years among older adults. This study quantified the contribution of 14 potentially modifiable risk factors for dementia in older adults using Japan-specific prevalence data. Methods: We calculated population attributable fractions (PAFs) and potential impact fractions (PIFs) using recent publicly available prevalence data from national surveys and cohort studies in Japan, and relative risks and communality weights from the 2024 Findings: The weighted combined PAF for all 14 risk factors was 38.9%, indicating that nearly 4 in 10 dementia cases in Japan might be preventable. Hearing loss (6.7%), physical inactivity (6.0%), and high LDL cholesterol (4.5%) were the largest contributors. Reducing all risk factors by 10% could prevent ∼208,000 dementia cases; reducing them by 20% could prevent ∼407,000 cases. Interpretation: Dementia preventive efforts in Japan should prioritise hearing care, physical activity, and metabolic health. Japan-specific data confirmed that hearing loss is a leading contributor to dementia, underscoring the urgency to increase public awareness and access to hearing interventions. Funding: The Royal Danish Embassy in Japan, Danish Ministry of Foreign Affairs, Danish Ministry of Health, and Japan Agency for Medical Research and Development funded this study.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.