Alzheimer's disease - Symptoms and causes - Mayo Clinic
https://www.mayoclinic.org/diseases-conditions/alzheimers-disease/symptoms-causes/syc-20350447
WebFeb 13, 2024 · Of the about 55 million people worldwide with dementia, 60% to 70% are estimated to have Alzheimer's disease. The early signs of the disease include forgetting recent events or conversations. Over time, it progresses to serious memory problems and loss of the ability to perform everyday tasks.
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