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.
Scientists reveal how beta-amyloid may cause Alzheimer's. Carla Shatz led a study that suggests Alzheimer's disease may begin to manifest long before the development of placques that lead to nerve cell death.