What Is Alzheimer S Disease Caused By

Family history researchers believe that genetics may play a role in developing alzheimer s disease. Alzheimer s is the sixth leading cause of death in the united states. Alzheimer s is a progressive disease where dementia symptoms gradually worsen over a number of years.

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Scientists don t yet fully understand what causes alzheimer s disease in most people.

What is alzheimer s disease caused by. Research is still being conducted to learn a lot more about what causes alzheimer s disease. One risk factor for this type of alzheimer s disease is a protein called apolipoprotein e apoe. Scientists believe that for most people alzheimer s disease is caused by a combination of genetic lifestyle and environmental factors that affect the brain over time. In its early stages memory loss is mild but with late stage alzheimer s individuals lose the ability to carry on a conversation and respond to their environment.

Researchers believe that alzheimer s disease and other dementias are likely caused by multiple factors including genetics lifestyle and environment. There probably is not one single cause but several factors that affect each person differently. The causes probably include a combination of age related changes in the brain along with genetic environmental and lifestyle factors. The apoe gene has three forms.

Age is the best known risk factor for alzheimer s disease. Less than 1 percent of the time alzheimer s is caused by specific genetic changes that virtually guarantee a person will develop the disease. Everyone has apoe which helps carry cholesterol in the blood. The importance of any one of these factors in increasing or decreasing the risk of alzheimer s disease may differ from person to person.

Changes in the brain can begin years before the first symptoms appear. While some risk factors age family history and heredity can t be changed emerging evidence suggests there may be other factors we can influence. Health environmental and lifestyle factors that may contribute to alzheimer s disease.