Alzheimer’s disease (AD) is a senile dementia and is the most common form of dementia. This incurable, degenerative, and terminal disease was first described by German psychiatrist and neuropathologist Alois Alzheimer in 1906. Mostly it is prevalent after 60 years of age. Alzheimer’s can also occur at early ages. In 2006 about 26.6 million cases were reported worldwide.
Approximately 10% of all persons over the age of 70 years have significant memory loss, and in more then half the cause is AD. It is estimated that the minimal annual total cost of caring for a single AD patient in an advanced stage of disease is >$50,000 (Harrison’s Principals of internal medicine, 18th edition, 2011).