Dementia rate in extreme elderly population

February, 2010

Data from The 90+ Study has revealed a sharply increasing incidence rate for dementia, from nearly 13% per year for 90-94, to over 40% in the 100+ age group.

Data from 330 participants in The 90+ Study, of whom 70% were women, has revealed an overall annual incidence rate of 18.2% for dementia, rising from 12.7% per year in the 90-94 age group, to 21.2% in the 95-99 age group and 40.7% per year in the 100+ age group. 60% of the cases were attributed to Alzheimer's disease, 22% vascular dementia, 9% mixed Alzheimer’s and vascular dementia and 9% other/unknown. Unlike previous findings, rates were very similar for men and women.

http://www.eurekalert.org/pub_releases/2010-02/w-die022410.php

Reference:

[183] Corrada, M. M., Brookmeyer R., Paganini-Hill A., Berlau D., & Kawas C. H.
(2010). Dementia incidence continues to increase with age in the oldest old: The 90+ study.
Annals of Neurology. 67(1), 114 - 121.

seniors

dementia prevalence

Alzheimers

Related News

HIV infection prematurely ages the brain

Although HIV doesn't directly infect neurons, it appears that once it has crossed the blood-brain barrier, it affects supporting cells that can release immune factors that harm neurons.

Cognitive activity protects against age-related decline

A study (“Midlife in the United States”) assessing 3,343 men and women aged 32-84 (mean age 56), of whom almost 40% had at least a 4-year college degree, has found evidence that frequent cognitive activity can counteract the detrimental effect of poor education on age-related cognitive decline.

Helping older adults remember whether they’ve done something

Previous research has shown that older adults are more likely to incorrectly repeat an action in situations where a

Older brains make good use of 'useless' information

It’s now well established that older brains tend to find it harder to filter out irrelevant information. But now a new study suggests that that isn’t all bad.

Resistance training improves attention in older women

A study involving 155 women aged 65-75 has found that those who participated in resistance training once or twice weekly for a year significantly improved their selective attention (maintaining mental focus) and conflict resolution (as well as muscular function of course!), compared to those who

Blueberry juice & purple grape juice improve memory in older adults

A number of rodent studies have shown that blueberries can improve aging memory; now for the first time, a human study provides evidence.

Rapamycin rescues memory in Alzheimer's mice

Damaged protein identified as early biomarker for Alzheimer's

A study involving 57 cognitively healthy older adults has found that those who showed decreased memory performance two years later (20 of the 57) had higher baseline levels of phosphorylated tau231 in the

Hypertension may predict dementia in older adults with particular cognitive deficits

Midlife hypertension has been confirmed as a risk factor for the development of dementia in late life, but there have been conflicting findings about the role of late-life hypertension.

Predicting the progression of Alzheimer's

By following 597 Alzheimer’s patients over 15 years, researchers have determined that a simple progression rate can be calculated at the initial visit, using symptom onset and present performance, and that this can reliably identify slow, intermediate and rapid progression.

Pages