- 15 July 2026 | News release | WHO
The World Health Organization (WHO) today released updated guidelines on reducing the risk of cognitive decline and dementia, providing countries with evidence-based recommendations to help prevent or delay the onset of dementia across the life course.
Dementia is a condition caused by brain diseases and affects memory, thinking and the ability to function. More than 57 million people live with dementia worldwide and nearly 10 million people get newly diagnosed every year. Alzheimer disease is the most common form of dementia and is estimated to account for 60–70% of cases.
The updated guidelines reflect significant growth in the evidence base since WHO first issued recommendations on dementia risk reduction in 2019. They provide consolidated recommendations on addressing unhealthy behaviours, managing medical conditions, and reducing exposure to environmental factors that may contribute to cognitive decline and dementia.
The guidelines recommend several healthy behaviours and lifestyle interventions to reduce dementia risk, including cognitive training and cognitive stimulation and engagement in social activities for adults who have normal cognition or are experiencing mild cognitive impairment.
世界衛生組織（世衛組織）於2026年7月15日發布新版《降低認知能力下降和癡呆症風險指南》，為各國提供基於證據的建議，幫助在生命全程預防或延緩癡呆症發生。
癡呆症是一種由腦部疾病引起的疾病，會影響記憶、思考和日常活動能力。目前，全世界有超過5700萬人患有癡呆症，每年新增近1000萬例診斷病例。阿茲海默症是最常見的失智症類型，估計佔所有病例的60%至70%。
新版指南反映了自世衛組織於2019年首次發布降低癡呆症風險建議以來，相關證據基礎取得的重大進展。指南就如何應對不健康行為、管理疾病以及降低可能導致認知能力下降和失智症的環境因素暴露提供了綜合建議。
指引建議多種健康行為和生活方式介入措施來降低失智症風險，包括對認知功能正常或有輕度認知障礙的成年人進行認知訓練、認知刺激以及參與社交活動。