What Is Alzheimer's?
Alzheimer's is a type of dementia that causes problems with memory, thinking and behavior. Symptoms usually develop slowly and get worse over time, becoming severe enough to interfere with daily tasks.
Alzheimer's and Dementia Basics
- Alzheimer's is the most common form of dementia, a general term for memory loss and other intellectual abilities serious enough to interfere with daily life. Alzheimer's disease accounts for 50 to 80 percent of dementia cases.
Learn more: What We Know Today and Related Dementias.
- Alzheimer's is not a normal part of aging, although the greatest known risk factor is increasing age, and the majority of people with Alzheimer's are 65 and older. But Alzheimer's is not just a disease of old age. Up to 5 percent of people with the disease have early-onset Alzheimer's (also known as younger-onset), which often appears when someone is in their 40s or 50s.
Learn more: Risk Factors
- Alzheimer's worsens over time. Alzheimer's is a progressive disease, where dementia symptoms gradually worsen over a number of years. In its early stages, memory loss is mild, but with late-stage Alzheimer's, individuals lose the ability to carry on a conversation and respond to their environment. Alzheimer's is the sixth leading cause of death in the United States. Those with Alzheimer's live an average of eight years after their symptoms become noticeable to others, but survival can range from four to 20 years, depending on age and other health conditions.
Learn more: 10 Warning Signs and Stages of Alzheimer's Disease.
- Alzheimer's has no current cure, but treatments for symptoms are available and research continues. Although current Alzheimer treatments cannot stop Alzheimer's from progressing, they can temporarily slow the worsening of dementia symptoms and improve quality of life for those with Alzheimer's and their caregivers. Today, there is a worldwide effort under way to find better ways to treat the disease, delay its onset, and prevent it from developing.
Learn more: Standard Treatments, Treatment Horizon, Prevention and Clinical Trials.
Symptoms of Alzheimer's
The most common early symptom of Alzheimer's is difficulty remembering newly learned information. Just like the rest of our bodies, our brains change as we age . Most of us eventually notice some slowed thinking and occasional problems with remembering certain things. However, serious memory loss, confusion and other major changes in the way our minds work may be a sign that brain cells are failing.
The most common early symptom of Alzheimer's is difficulty remembering newly learned information because Alzheimer changes typically begin in the part of the brain that affects learning. As Alzheimer's advances through the brain it leads to increasingly severe symptoms, including disorientation, mood and behavior changes; deepening confusion about events, time and place; unfounded suspicions about family, friends and professional caregivers; more serious memory loss and behavior changes; and difficulty speaking, swallowing and walking.People with memory loss or other possible signs of Alzheimer’s may find it hard to recognize they have a problem. Signs of dementia may be more obvious to family members or friends. Anyone experiencing dementia-like symptoms should see a doctor as soon as possible. If you need assistance finding a doctor with experience evaluating memory problems, your local Alzheimer's Association chapter can help. Early diagnosis and intervention methods are improving dramatically, and treatment options and sources of support can improve quality of life.
Help is available
If you or a loved one has been diagnosed with Alzheimer's or a related dementia, you are not alone. The Alzheimer's Association is the trusted resource for reliable information, education, referral and support to millions of people affected by the disease.
This information is provided by the Alzheimer's Association ®
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