Nearly half of dementia cases may be preventable
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New World Health Organization guidance suggests that up to 45% of dementia risk may be preventable or delayed by addressing modifiable factors throughout life. These include staying physically active, managing blood pressure and diabetes, avoiding smoking, maintaining social connections, protecting hearing, and supporting good mental health. Early lifestyle changes and better access to preventive care may help reduce dementia risk and promote healthier brain aging.
Source
Risk reduction of cognitive decline and dementia: WHO guidelines, second edition. Geneva: World Health Organization; 2026. Licence: CC BY-NC-SA 3.0 IGO.
Additional Reading
https://medicalxpress.com/news/2026-07-dementia-delayed.html
https://www.alzheimersresearchuk.org/dementia-information/reducing-your-risk/