Chemical Changes in the Dementia Brain

Chemical Changes

Chemical changes include the following:

  • Neurons which carry signals to the brain are destroyed.
  • Signals transmitted between brain cells carried between synapses by neurotransmitters are interrupted.
  • The connections between nerve cells of the brain become interrupted.

Chemical changes affect the brain in many ways. Billions of nerve cells carry signals at trillions of points throughout the brain; when these processes are compromised, so too are basic brain tasks, such as thinking, feeling, and forming and recalling memories (Alzheimer’s Association 2011).

Chemical and structural changes impact one another to reinforce the damage to the brain. Most changes in the brain are not the result of one or the other, but a combination of both. Watch the video on the next page and read on to learn more about brain changes.

Alzheimers Association. 2011. Brain Tour. Available at: Accessed April 30th, 2011.