How does dementia affect the brain?

Damage to brain cells causes dementia; these damages interfere with the communication between brain cells. During a condition where brain cells cannot display normally, thinking, behaviour, and feelings can be affected.
Several distinct brain regions are responsible for different functions (memory, judgment, and movement). Whenever a cell in a particular area is damaged, it cannot function normally.
There are various types of dementia associated with specific types of brain cell damage. For example, in Alzheimer’s disease, particular proteins inside and outside brain cells make it difficult for brain cells to communicate and remain healthy. Learning and memory are centred in the brain’s hippocampus region, which is often the first part of the brain to be damaged. It is for this reason that dementia usually begins with memory loss.
Dementia mainly affects the brain and worsens with time, but thinking and memory problems associated with the following conditions can be improved if they are treated:
•  Depression
•  Medication side effects
•  Excess use of alcohol
• Thyroid problems
• Vitamin deficiencies