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What is Alzheimer’s Disease?

Directed by:David Shenk

Alzheimer’s is a slow, fatal disease of the brain affecting one in ten people over the age of 65. No one is immune. The disease comes on gradually, as two abnormal protein fragments called Plaques and Tangles accumulate in the brain and kill brain cells. As they spread throughout the brain, they lead to different stages of Alzheimer’s.

David Shenk

David Shenk is the award-winning, national-bestselling author of six books, including The Genius in All of Us ("deeply interesting and important" - NYTimes), The Forgetting ("remarkable" - LATimes), Data Smog ("indispensable" - NYTimes), and The Immortal Game ("superb" - WSJournal). He is a popular lecturer, a short-film director/producer, and a contributor to National Geographic, The New York Times, and other publications. More at

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