Alzheimer’s disease can be characterized by three main phases:

(1) Preclinical AD: Abnormal AD biomarkers but no clinical symptoms

(2) MCI (Mild Cognitive Impairment): Individuals are mildly symptomatic but do not have dementia. MCI denotes cognitive decline without impairment in activities of daily living

(3) Dementia: Individuals show progressive loss of cognitive function and the ability to live independently

Read more about the typical course of Alzheimer’s disease

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