Overview & facts
Facts conquer fear. Start here to find out what is and isn't known about Alzheimer's causes, Alzheimer's risks and Alzheimer's prevention.
What is Alzheimer's disease?
A progressive loss of cells in the brain gradually affects memory, behaviour and other brain functions in people with Alzheimer's disease.
Dementia is not a disease itself. It's a group of symptoms that are caused by various diseases or conditions. Read how dementia develops, what causes it and which conditions are treatable.
Several factors contribute to the development of Alzheimer’s disease. Family history is just one of them. Click here to see why scientists suspect that genetics may play a role in many cases.
Are you at risk?
Learn more about how Down’s syndrome increases the risk of Alzheimer’s disease.
The number of people with the disease doubles every five years beyond the age of 65. Are you at risk of Alzheimer's disease? Get the facts here.