• Alzheimer’s disease is a brain disorder that slowly destroys memory and thinking skills and, eventually, the ability to carry out the simplest tasks.
  • Alzheimer’s is one of the top ten leading cause of death in adults in the U.S.
  • More than 6 million Americans, most of them age 65 or older, may have dementia caused by Alzheimer’s.
  • Still, scientists don’t yet fully understand what causes Alzheimer’s disease in most people. 
  • Amyloid plaques and tangles in the brain are still considered some of the main features of Alzheimer’s disease.
  • In people with early-onset Alzheimer’s, a genetic mutation may be the cause. 
  • Late-onset Alzheimer’s arises from a complex series of brain changes that may occur over decades. 
  • The causes probably include a combination of genetic, environmental, and lifestyle factors.

Source: (https://www.nia.nih.gov/health/alzheimers-disease-fact-sheet)