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Alzheimer's & Dementia
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What is Dementia?

Dementia is a general term for a decline in mental ability severe enough to interfere with daily life. Memory loss is an example. Alzheimer's is the most common type of dementia. Dementia is not a specific disease. It's an overall term that describes a wide range of symptoms associated with a decline in memory or other thinking skills severe enough to reduce a person's ability to perform everyday activities.

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What Is Alzheimer's?

Alzheimer's is a type of dementia that causes problems with memory, thinking and behavior. Symptoms usually develop slowly and get worse over time, becoming severe enough to interfere with daily tasks. Alzheimer's is the most common form of dementia, a general term for memory loss and other intellectual abilities serious enough to interfere with daily life. Alzheimer's disease accounts for 50 to 80 percent of dementia cases. 

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10 Warning Signs

Memory loss that disrupts daily life may be a symptom of Alzheimer's or another dementia. Alzheimer's is a brain disease that causes a slow decline in memory, thinking and reasoning skills. There are 10 warning signs and symptoms. Every individual may experience one or more of these signs in different degrees. If you notice any of them, please see a doctor.

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Facts and Figures

An estimated 5.2 million Americans have Alzheimer's disease in 2014, including approximately 200,000 individuals younger than age 65 who have younger-onset Alzheimer's. Almost two-thirds of American seniors living with Alzheimer's are women. Of the 5 million people age 65 and older with Alzheimer's in the United States, 3.2 million are women and 1.8 million are men. The number of Americans with Alzheimer's disease and other dementias will escalate rapidly in coming years as the baby boom generation ages. By 2050, the number of people age 65 and older with Alzheimer's disease may nearly triple, from 5 million to as many as 16 million, barring the development of medical breakthroughs to prevent, slow or stop the disease.

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Types of Dementia

Dementia is a general term for loss of memory and other mental abilities severe enough to interfere with daily life. It is caused by physical changes in the brain.

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Seven Stages of Alzheimer's

Alzheimer's symptoms vary. The stages provide a general idea of how abilities change during the course of the disease.

Stage 1: No impairment
Stage 2: Very mild decline
Stage 3: Mild decline
Stage 4: Moderate decline
Stage 5: Moderately severe decline
Stage 6: Severe decline
Stage 7: Very severe decline

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Alzheimer's Association

Our vision is a world without Alzheimer's
Formed in 1980, the Alzheimer's Association is the world's leading voluntary health organization in Alzheimer's care, support and research.