Alzheimer's disease leads to nerve cell death and tissue loss throughout the brain. Over time, the brain shrinks dramatically, affecting nearly all its functions.
These images show:
A brain without the disease.
A brain with advanced Alzheimer's.
Scientists see the terrible effects of Alzheimer's disease when they look at brain tissue under the microscope. Scientists are not absolutely sure what causes cell death and tissue loss in the Alzheimer's brain, but plaques and tangles that develop are prime suspects.Alzheimer's tissue has many fewer nerve cells and synapses than a healthy brain.