UK trial tests Alzheimer's drug on asymptomatic high-risk adults to prevent dementia

An NHS trust is enrolling healthy middle-aged adults at elevated genetic risk for Alzheimer's in an international trial of an experimental drug aimed at preventing dementia before symptoms appear. The trial's design marks a shift toward preventive treatment, but efficacy and long-term outcomes remain unproven. If successful, it could reshape Alzheimer's care and healthcare costs.