What is the typical age of onset of Alzheimer's disease?

Alzheimer's disease reduce the effectiveness of healthy nerve cells (that carry messages to and from the brain) and gradually destroying them. Age is the single most significant factor in the development of Alzheimer's disease. read more

There are two common forms of Alzheimer's disease according to age: Early-onset Alzheimer's; Early-onset Alzheimer's happens to people who are younger than age 65. Often, they’re in their 40s or 50s when they’re diagnosed with the disease. It’s rare - up to 5% of all people with Alzheimer's have early-onset. read more

According to the Alzheimer’s Association, Alzheimer’s disease (AD) affects more than 5 million people in the United States. Although it’s known to affect adults 65 years and older, up to 5 percent of those diagnosed have early onset AD. read more

Early-onset Alzheimer's is an uncommon form of dementia that strikes people younger than age 65. Of all the people who have Alzheimer's disease, about 5 percent develop symptoms before age 65. So if 4 million Americans have Alzheimer's, at least 200,000 people have the early-onset form of the disease. read more