Scientists do not know what causes Alzheimers disease. It may be a combination of various genetic and environmental factors that trigger the process in which brain nerve cells are destroyed.
Genetics certainly plays a role in early-onset Alzheimer's, a rare form of the disease that usually runs in families. Scientists are also investigating genetic targets for late-onset Alzheimer's, which is the more common form. At this time, only one gene, apolipoprotein E (ApoE) has been...Read more