In the Sea Services (Navy, Marine Corps and Coast Guard), a Mustang is an Officer who has promoted up from the ranks of Navy enlisted personnel through an in... Skip navigation Sign in
What is Alzheimer's disease? Alzheimer's disease is the most common cause of dementia. The word dementia describes a set of symptoms that can include memory loss and difficulties with thinking, problem-solving or language. These symptoms occur when the brain is damaged by certain diseases, including Alzheimer's disease.
1 Alzheimerâs disease âAlzheimerâs disease is the most common cause of dementia in people over 65, although the disease also occurs in people much younger. 2  Alzheimerâs affects approximately 50 percent of those over 85. 3  Presently, researchers cannot definitely say what causes the disease, and there is no cure.