Directory:Tell Me About Senior Health/Alzheimer's Disease/Alzheimer's Disease Defined - Revision history

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== Alzheimer's Disease Defined ==

Dementia is a brain disorder that seriously affects a person's memory, thinking, and reasoning skills. People with dementia often have trouble thinking and speaking clearly, remembering recent events, and learning new things. Over time, it becomes hard for them to handle everyday activities and take care of themselves. There are many causes of dementia, but Alzheimer's disease is the most common cause of dementia in older persons.

Scientists think that up to 4.5 million people in the United States suffer from Alzheimer's disease. The disease usually begins after age 65 and risk goes up with age. While younger people also may get Alzheimer's disease, it is much less common.

About 5 percent of men and women ages 65 to 74 have Alzheimer's disease, and nearly half of those age 85 and older may have the disease. It is important to note, however, that Alzheimer's disease is not a normal part of aging.

Alzheimer's disease is named after Dr. Alois Alzheimer, a German doctor. In 1906, Dr. Alzheimer noticed changes in the brain tissue of a woman who had died of an unusual mental illness. He found abnormal clumps and tangled bundles of fibers. The clumps are now called amyloid plaques and the tangles are called neurofibrillary tangles. Today, these plaques and tangles in the brain are considered signs of Alzheimer's disease.

Scientists also have found other brain changes in people with Alzheimer's disease. There is a loss of nerve cells and pathways in areas of the brain that are vital to memory and other mental abilities. There also are lower levels of some of the chemicals in the brain that carry complex messages back and forth between nerve cells.

Alzheimer's disease may disrupt normal thinking and memory by blocking these messages between nerve cells.

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 * [[Directory:Tell Me About Senior Health/Alzheimer's Disease/Alzheimer's Disease The Nun Study|Alzheimer's Disease The Nun Study]] (4 min 5 sec)
 * [[Directory:Tell Me About Senior Health/Alzheimer's Disease/Diagnosing Alzheimer's Disease|Diagnosing Alzheimer's Disease]] (2 min 31 sec)
+<br>
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 The information provided should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed physician should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies.

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 == Alzheimer's Disease Defined ==
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 == Alzheimer's Disease Articles ==
 * [[Directory:Tell Me About Senior Health/Alzheimer's Disease/Alzheimer's Disease Causes and Risk Factors|Alzheimer's Disease Causes and Risk Factors]]
 * [[Directory:Tell Me About Senior Health/Alzheimer's Disease/Alzheimer's Disease Symptoms and Diagnosis|Alzheimer's Disease Symptoms and Diagnosis]]

← Older revision		Revision as of 17:18, 22 March 2007
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	Alzheimer's disease may disrupt normal thinking and memory by blocking these messages between nerve cells.		Alzheimer's disease may disrupt normal thinking and memory by blocking these messages between nerve cells.
		+
		+	== Sponsored Links ==
		+	<adsense>
		+	google_ad_client = "pub-5512298628457000";
		+	google_ad_width = 336;
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		+	</adsense>
		+
		+	== Alzheimer's Disease Articles ==
		+
		+	* [[Directory:Tell Me About Senior Health/Alzheimer's Disease/Alzheimer's Disease Defined\|Alzheimer's Disease Defined]]
		+	* [[Directory:Tell Me About Senior Health/Alzheimer's Disease/Alzheimer's Disease Causes and Risk Factors\|Alzheimer's Disease Causes and Risk Factors]]
		+	* [[Directory:Tell Me About Senior Health/Alzheimer's Disease/Alzheimer's Disease Symptoms and Diagnosis\|Alzheimer's Disease Symptoms and Diagnosis]]
		+	* [[Directory:Tell Me About Senior Health/Alzheimer's Disease/Alzheimer's Disease Treatments and Research\|Alzheimer's Disease Treatments and Research]]
		+	* [[Directory:Tell Me About Senior Health/Alzheimer's Disease/Alzheimer's Disease Frequently Asked Questions\|Alzheimer's Disease Frequently Asked Questions]]
		+
		+	== Alzheimer's Disease Videos ==
		+
		+	* [[Directory:Tell Me About Senior Health/Alzheimer's Disease/Cognitive Test for Alzheimer's\|Cognitive Test for Alzheimer's]] (4 min 40 sec)
		+	* [[Directory:Tell Me About Senior Health/Alzheimer's Disease/How Alzheimer's Affects Neurons In The Brain\|How Alzheimer's Affects Neurons In The Brain]] (1 min 48 sec)
		+	* [[Directory:Tell Me About Senior Health/Alzheimer's Disease/Alzheimer's Disease The Nun Study\|Alzheimer's Disease The Nun Study]] (4 min 5 sec)
		+	* [[Directory:Tell Me About Senior Health/Alzheimer's Disease/Diagnosing Alzheimer's Disease\|Diagnosing Alzheimer's Disease]] (2 min 31 sec)
		+
		+	----
		+	The information provided should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed physician should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies.
		+	<br>
		+	<br>
		+	Copyright Information: Public domain information with acknowledgement given to the U.S. National Library of Medicine.
		+	----
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		+	[[Page Of::Directory:Tell Me About Senior Health\|Directory:Tell Me About Senior Health]]
		+	[[Medical Name:=Alzheimer's Disease]]
		+	[[Category:Health]]
		+	[[Category:Medicine]]
		+	[[Category:Diseases]]