Researchers from Harvard Medical School have found that people's brains can start to go bad ways even before they have any symptoms of Alzheimer's disease. One of the main characteristics of Alzheimer's disease is the accumulation and deposition of clumps of damaging amyloid protein in the brain. Using brain scans the researchers found that a significant number of older people without dementia showed amyloid deposition and abnormal neural activity in important areas of the brain network thought to be involved in memory.
You can find out more about this research at
http://www.sciencedaily.com/releases/2009/07/090729121548.htm
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