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Discover the groundbreaking advancements in early Alzheimer's detection and prevention in this TEDx talk by Dr. Bernard Hanseeuw. Learn about the alarming prevalence of Alzheimer's disease and its brain lesions in older adults, and explore the revolutionary PET-scan technology that can detect hallmark pathologies up to two decades before symptom onset. Gain insights into Dr. Hanseeuw's research at Massachusetts General Hospital/Harvard Medical School on molecular PET imaging of amyloid and tau proteins. Understand the pathophysiological mechanisms behind Alzheimer's and the potential for developing preventive therapies. Delve into topics such as Alzheimer's risk factors, imaging techniques, pathology, and prevention strategies. This 16-minute presentation offers hope for early intervention and improved outcomes in the fight against Alzheimer's disease.