preview

Essay On Alzheimer's Disease

Decent Essays

Alzheimer’s disease is a type of dementia that causes problems with memory, thinking, and behavior, along with causing severe language problems. This disease is known as the most common form of dementia, and its account for 50 to 80 percent of dementia cases. According to current estimates, about 10% of adults over the age of 65 and nearly half of adults over age 85 suffer from Alzheimer’s disease (Alzheimer’s Association, 2006). In addition, experts also suggested that as many as 5.1 million Americans may have Alzheimer’s disease.

Alzheimer’s disease is named after Dr. Alois Alzheimer, a German psychiatrist and neurologist. In 1906, Dr. Alzheimer noticed changes in the brain tissue of a woman who had died of an unusual mental illness. Her …show more content…

Many scientists believe that Alzheimer’s results from a combination of genetic, lifestyle, and environmental factors that affect the brain over time. Because many people are different in their genetic make-up and lifestyle, their chances of developing Alzheimer’s disease are also different. Most people who develop the disease after the age of 60 have “late-onset” Alzheimer’s. Many studies have linked the apolipoprotein E (APOE) gene to late-onset Alzheimer’s. This gene has several forms, and one of them, APOE 4, seems to increase a person’s risk of developing the disease. However, other studies have also shown that carrying the APOE 4 of the gene does not necessarily mean that a person will develop Alzheimer’s disease, and a person not carrying APOE 4 can also develop the disease. Researchers working on genome-wide association studies (GWAS) have identified eleven new genes that contribute to risk of late-onset Alzheimer’s disease, and this strengthened evidence about the disease of certain biological pathways, including amyloid metabolism and immune

Get Access