… the symptoms generally begin after age 60.
The time from diagnosis to death can be as little as three years in people over 80 years old. However, it can be much longer for younger people.
Damage to the brain begins years before symptoms appear. Abnormal protein deposits form plaques and tangles in the brain of someone with Alzheimer’s disease. Connections between cells are lost, and they begin to die. In advanced cases, the brain shows significant shrinkage.
It’s impossible to diagnose Alzheimer’s with complete accuracy while a person is alive. The diagnosis can only be confirmed when the brain is examined under a microscope during an autopsy. However, specialists are able to make the correct diagnosis up to 90 percent of the time
