It is the most common type of dementia, accounting for 60 to 80 percent of cases of dementia in the United States.
In 2013, 6.8 million people in the U.S. had been diagnosed with dementia. Of these, 5 million had a diagnosis of Alzheimer’s. By 2050, the numbers are expected to double.
Alzheimer’s is a neurodegenerative disease. At first, symptoms are mild, but they become more severe over time.
Fast facts on Alzheimer’s disease
- Alzheimer’s disease is the most common type of dementia.
- It happens when plaques containing beta amyloid form in the brain.
- As symptoms worsen, it becomes harder for people to remember recent events, to reason, and to recognize people they know.
- Eventually, a person with Alzheimer’s is likely to need full-time assistance.
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