Chronic degenerative disease that installs on average at the age of 60 years over and affects areas of the brain responsible for memory, logic and temporal-spatial orientation.
The causes are unknown, it is assumed according to some studies that the following contribute to disease: hormone replacement therapy to menopausal women, family inheritance, diabetes, a diet rich in animal protein and fat and lack of vitamins A and C.
In the first instant episodes of memory loss on short term occur , but do not affect the data memory of the past. Then behavioral , personality or thinking disorders occur.
People with Alzheimer's can feed themselves or take care of personal hygiene, but can easily be lost while in public for hours without realizing what they are doing. With the evolution of disease, episodes of dementia begin to appear.