How Is Alzheimer's Disease Diagnosed? (NIH)

How Is Alzheimer's Disease Diagnosed? (NIH)

Scientists continue to unravel the complex brain changes involved in the onset and progression of Alzheimer’s disease.

It seems likely that damage to the brain starts a decade or more before memory and other cognitive problems appear.

During this preclinical stage of Alzheimer’s disease, people seem to be symptom-free, but toxic changes are taking place in the brain.