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Down Syndrome and Alzheimer's Disease
As adults with Down syndrome live longer, understanding their increased risk of Alzheimer’s disease has become an important part of supporting healthy aging. Down syndrome–associated Alzheimer’s disease, often called DS-AD, linked in part to an extra copy of chromosome 21, is the most prevalent expression of dementia associated with Down syndrome. Chromosome 21 carries a gene involved in the production of amyloid, a protein that can build up in the brain. Alzheimer’s-related brain changes may be present for years before noticeable symptoms appear, and the age at which symptoms develop and their progression vary among individuals.
Early signs of DS-AD may include changes in mood, personality, behavior, or the ability to manage familiar activities. Memory problems may also develop. Recognizing these changes requires knowing the person’s usual abilities and observing how they change over time. Other health conditions—including hearing or vision loss, thyroid problems, depression, and sleep disorders—can also affect functioning and should be considered during an evaluation. Seizures that begin in adulthood may also occur and warrant medical attention.
Although research into biomarkers and new treatments is advancing, further study is needed to determine how best to use them in adults with Down syndrome. Meanwhile, thoughtful health care, meaningful activities, adaptations to the person’s surroundings, and support for family and professional caregivers can help maintain well-being and quality of life.
The publications noted below are among many that explore these topics further, offering information for people with Down syndrome, families, service providers, and health professionals as they navigate aging, assessment, care, and planning.
Numerous organizations also have produced briefs on this association and guides for caregivers and others interested in knowing more. A brief list of the national organizations and links to their sites is provided under the Quick Links box.
Recursos sobre el síndrome de Down y la demencia
El NTG ha estado involucrado en varias publicaciones relacionadas con el síndrome de Down y el apoyo a la demencia. Navegue a través de la biblioteca de publicaciones de apoyo familiar a continuación.
Noticias sobre el síndrome de Down y la demencia
For more information on what has become to be referred to as 'Down syndrome regression' see our page on this topic.







































