Original Investigation

Global Incidence of All-Cause Dementia

JAMA Neurology 10.1001/jamaneurol.2026.3540

October 12, 2026 at 11:00 AM EDT

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The harmonized estimates presented in this study provide a comparable benchmark for global dementia incidence and inform planning for prevention, diagnosis, and memory-care services, particularly in underrepresented low- and middle-income country settings.

Corresponding Authors: Ashleigh S. Vella, PhD (ash.vella@unsw.edu.au), and Perminder S. Sachdev, MD, PhD (p.sachdev@unsw.edu.au& Mental Health, School of Clinical Medicine, University of New South Wales, Health Translation Hub (Building C29), Level 3 South, 55 Botany Street, Sydney, NSW 2052, Australia.

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