What is Alzheimer's disease?

Alzheimer's disease is a degenerative disease, characterized by memory loss in reverse, from recent to ancient.
In the so-called precocious state, in addition to memory loss and difficulty in learning new things, other symptoms are irritability and difficulties speaking, forgetting words when you are talking.
In the intermediate state, it is impossible to fix new memories and old memories begin to be lost, although not totally. The sick require help to eat, dress, and wash. In addition, their behavior is more hostile and aggressive physically and verbally. They have a tendency to get lost in familiar places, even in their own home.
In severe states, patients gradually lose the ability to eat, walk, or perform. daily activities, in addition to muscle paralysis or inactivity, which prevents them from swallowing or moving. At this stage the brain literally loses control and shuts down.
The cause is unknown. There appear to be some hereditary factors or environmental exposures to metals such as aluminum, however this has not been satisfactorily verified.

Since Alzheimer's occurs mainly in old age, it is one of the chronic degenerative diseases, and many of its manifestations coincide with the effects of old age. It affects the structures of the cortex, especially the prefrontal cortex, which explains the aggressive behavior.
In addition, senile plaques (formed by brain support tissue) appear abnormally high, which interferes with oxygenation and glucose supply. This lack of nutrients causes areas of brain death that during the course of the disease turns off the functions of the brain.
So far no cure has been found, treatments are aimed at slowing down the degeneration of the brain as much as possible.