Authors
Cecilia U D Stenfors, Jing Wu, Giulia Grande, Andrei Pyko, Mare Löhmus, Göran Pershagen, Debora Rizzuto
Published in
Alzheimer's & dementia : the journal of the Alzheimer's Association. Volume 22. Issue 10. Pages e71835.
Abstract
Residential greenspace is linked to mental and cardiometabolic health, but longitudinal studies on detailed greenspace and dementia incidence are limited.
We followed 2993 dementia-free participants in the Swedish National Study on Aging and Care Kungsholmen for 16 years; 477 developed clinically diagnosed dementia. Greenspace was assessed using normalized difference vegetation index within 100-, 250-, and 500-m residential buffers. Cox models estimated hazard ratios (HRs) per interquartile-range greenspace increment and tested effect modification by air pollution, road traffic noise, blue space, age, sex, and apolipoprotein E-ε4 (APOE-ε4).
Higher greenspace within 100 m was associated with lower dementia incidence (HR = 0.79, 95% confidence interval [CI] = 0.64-0.96), whereas associations for larger buffers were attenuated. Associations were stronger in women (HR = 0.69, 95% CI = 0.54-0.89) than men (HR = 0.93, 95% CI = 0.71-1.24).
Close residential greenspace may reduce dementia risk in older adults, particularly women.
PMID:
42805935
Bibliographic data and abstract were imported from PubMed on 29 Sep 2026.
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