Almost half of dementia cases could be prevented—but change is needed

MedicalXpress | يول 02, 2026

Nearly half of dementia cases could be prevented by tackling modifiable risk factors such as physical inactivity, smoking, low education or social isolation, but new Curtin University research suggests current public health approaches are falling short in driving real behavior change. The major international review published in The Lancet Healthy Longevity found that while large-scale health awareness campaigns for dementia prevention can reach wide audiences, they often lead to only small improvements in knowledge and limited changes in behavior.