Alzheimer’s and Life Expectancy: What to Expect

2024-09-23

Alzheimer’s disease is the most common form of dementia, accounting for 60–70% of all cases. The average life expectancy after diagnosis is 4–10 years, though some individuals live significantly longer depending on age at diagnosis and overall health.

Early and Late Onset Affect Life Expectancy

The life expectancy after an Alzheimer’s diagnosis depends largely on when the disease begins. People who experience early-onset Alzheimer’s (before the age of 65) often face a faster progression of the disease compared to those diagnosed later in life. For these patients, the disease may advance more quickly, and life expectancy can be shorter.

Those with late-onset Alzheimer’s (after the age of 65) generally experience a slower progression, though this is not always the case. On average, a person with Alzheimer’s lives between 4 and 10 years after diagnosis, but some individuals may live as long as 20 years or more, depending on other health factors and how early the disease is detected.

The Stages of the Disease

Alzheimer’s disease develops in three main stages: early, middle, and late stages. In the early stage, symptoms are often mild, and the person can still maintain a level of independence. It’s in the later stage, when memory loss becomes more severe and cognitive abilities decline further, that the need for care significantly increases. The speed at which a person moves from one stage to the next affects their life expectancy.

Other Factors That Affect Life Expectancy

It is important to note that Alzheimer’s itself is not the only factor influencing life expectancy. Other medical conditions and complications also play a role. Many people with Alzheimer’s experience infections, malnutrition, or fall-related injuries in the later stages of the disease, which can shorten life expectancy.

However, good care and a safe environment can improve the quality of life and, in some cases, extend it. While there is no cure for Alzheimer’s, treatments are available that can slow the progression of symptoms and provide relief for a time.

Read more about what dementia is and related conditions such as Lewy body dementia.

Read more: Alzheimer’s disease – What is dementia? – Lewy body dementia – Dementia tracker

Sensorem’s safety alarm has GPS positioning, medication reminders and automatic fall alarm

Sensorem’s personal alarm is an example of a technical aid specially developed for people with dementia. The personal alarm works outdoors and has built-in GPS positioning so that relatives can see the user’s position on a map in the Sensorem app. Relatives are automatically called by the personal alarm (two-way communication) if the user leaves a predetermined geographical area. The personal alarm also has medication reminders, which means that the watch emits a sound and tells the user that it is time to take their medication. The personal alarm can also alert automatically in the event of a fall with the built-in fall sensor.

 

Senior with Sensorem security alarm on the arm. The alarm works outdoors and without home service

 

READ ABOUT HOW SENSOREMS PERSONAL ALARM CAN HELP WITH DEMENTIA

References

  • [1] Alzheimer’s Association. Alzheimer’s Disease Facts and Figures. https://www.alz.org
  • [2] NHS. Alzheimer’s disease – how long can you live with it? https://www.nhs.uk
  • [3] Ott A, et al. “Incidence and risk of dementia.” American Journal of Epidemiology, 1998.