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Alzheimer's Disease FAQs

What is Alzheimer's disease?

Alzheimer's disease is a progressive and fatal brain disorder that gradually destroys a person's memory and ability to learn, reason, communicate, and make judgments.

Who gets Alzheimer's disease?

  • Approximately 4.5 million Americans and more than 30 million people worldwide have Alzheimer's disease.
  • The disease affects all races and ethnic groups.

  • Alzheimer's disease seems to affect more women than men.

  • Alzheimer's disease mainly affects people aged 60 years and older. The risk of developing Alzheimer's disease increases with age.


Next: What causes Alzheimer's disease? »

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Alzheimer Disease »

Alzheimer disease (Alzheimer’s disease, AD), the most common cause of dementia1, is an acquired cognitive and behavioral impairment of sufficient severity that markedly interferes with social and occupational functioning.

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