About Alzheimer's Disease
Alzheimer’s disease is a brain disease that slowly destroys memory, thinking ability, and over time, the ability to carry out daily activities. Dementia is the term for conditions where memory, language and problem-solving difficulties are severe enough to interfere in everyday life.
Many conditions can cause dementia, but Alzheimer’s disease is the most common cause. Alzheimer’s disease accounts for 60 to 80% of cases of dementia.1 It typically affects people over the age of 65 but can affect those younger too. There is no cure or effective long-term treatment.
Most people show signs of dementia long before they are diagnosed with Alzheimer’s disease. It can be difficult to tell whether the changes are typical signs of aging or something more serious. It can also be difficult to know what steps to take if a loved one or friend shows signs of Alzheimer’s disease.
Learn the warning signs and start a conversation with your loved one if you start to notice changes that may be related to dementia. The earlier you begin the conversation, the better you can prepare and respond to the changes that may come.
Facts and Figures
Learn More
Alzheimer’s Disease FAQ
Read these common questions and answers to get an overview of Alzheimer’s disease, who is affected by it and when to see a doctor for evaluation.
Genetic Risk Factors
Genetic testing may determine whether you have an increased risk for developing Alzheimer’s, but it can’t identify whether you have it already or will develop it in the future.
Additional Information from the Alzheimer’s Association
Prevention
Research is underway to find treatments that may reduce, delay or prevent symptoms.
Brain Health
Learn about lifestyle changes that promote a healthy brain.
1 Alzheimer’s Association. Alzheimer’s disease facts and figures. https://www.alz.org/media/Documents/alzheimers-facts-and-figures.pdf. 2023. Accessed August 14, 2023.