Featured Research

from universities, journals, and other organizations

Risk of dementia declined over past 20 years

Date:
April 19, 2013
Source:
Karolinska Institutet
Summary:
The risk of developing dementia may have declined over the past 20 years, in direct contrast to what many previously assumed. The decrease in dementia risk coincides with the general reduction in cardiovascular disease over recent decades, researchers said.

A new Swedish study published in the journal Neurology shows that the risk of developing dementia may have declined over the past 20 years, in direct contrast to what many previously assumed. The result is based on data from the SNAC-K, an ongoing study on aging and health that started in 1987.

Related Articles


"We know that cardiovascular disease is an important risk factor for dementia. The suggested decrease in dementia risk coincides with the general reduction in cardiovascular disease over recent decades," says Associate Professor Chengxuan Qiu of the Aging Research Center (ARC), established by Karolinska Institutet and Stockholm University. "Health check-ups and cardiovascular disease prevention have improved significantly in Sweden, and we now see results of this improvement reflected in the risk of developing dementia."

Dementia is a constellation of symptoms characterized by impaired memory and other mental functions. After age 75, dementia is commonly due to multiple causes, mainly Alzheimer's disease and vascular dementia. In the current study, more than 3000 persons 75 years and older living in the central Stockholm neighborhood of Kungsholmen participated. Of the participants, 523 were diagnosed with some form of dementia. The key members of the research group have been essentially the same since 1987, including the neurologist responsible for the clinical diagnoses of dementia. All study participants were assessed by a nurse, a physician, and a psychologist.

The result shows the prevalence of dementia was stable in both men and women across all age groups after age 75 during the entire study period (1987-1989 and 2001-2004), despite the fact that the survival of persons with dementia increased since the end of the 1980s. This means that the overall risk of developing dementia must have declined during the period, possibly thanks to prevention and better treatment of cardiovascular disease.

"The reduction of dementia risk is a positive phenomenon, but it is important to remember that the number of people with dementia will continue to rise along with the increase in life expectancy and absolute numbers of people over age 75," says Professor Laura Fratiglioni, Director of the Aging Research Center. "This means that the societal burden of dementia and the need for medical and social services will continue to increase. Today there's no way to cure patients who have dementia. Instead we must continue to improve health care and prevention in this area."

The study was funded by the Swedish Council for Working Life and Social Research (FAS ), the Swedish Ministry of Health and Social Affairs, the Swedish Research Council, and Swedish Brain Power.


Story Source:

The above story is based on materials provided by Karolinska Institutet. Note: Materials may be edited for content and length.


Journal Reference:

  1. C. Qiu, E. von Strauss, L. Backman, B. Winblad, L. Fratiglioni. Twenty-year changes in dementia occurrence suggest decreasing incidence in central Stockholm, Sweden. Neurology, 2013; DOI: 10.1212/WNL.0b013e318292a2f9

Cite This Page:

Karolinska Institutet. "Risk of dementia declined over past 20 years." ScienceDaily. ScienceDaily, 19 April 2013. <www.sciencedaily.com/releases/2013/04/130419075905.htm>.
Karolinska Institutet. (2013, April 19). Risk of dementia declined over past 20 years. ScienceDaily. Retrieved December 19, 2014 from www.sciencedaily.com/releases/2013/04/130419075905.htm
Karolinska Institutet. "Risk of dementia declined over past 20 years." ScienceDaily. www.sciencedaily.com/releases/2013/04/130419075905.htm (accessed December 19, 2014).

Share This


More From ScienceDaily



More Health & Medicine News

Friday, December 19, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

The Best Tips to Curb Holiday Carbs

The Best Tips to Curb Holiday Carbs

Buzz60 (Dec. 19, 2014) It's hard to resist those delicious but fattening carbs we all crave during the winter months, but there are some ways to stay satisfied without consuming the extra calories. Vanessa Freeman (@VanessaFreeTV) has the details. Video provided by Buzz60
Powered by NewsLook.com
Sierra Leone Bikers Spread the Message to Fight Ebola

Sierra Leone Bikers Spread the Message to Fight Ebola

AFP (Dec. 19, 2014) More than 100 motorcyclists hit the road to spread awareness messages about Ebola. Nearly 7,000 people have now died from the virus, almost all of them in west Africa, according to the World Health Organization. Video provided by AFP
Powered by NewsLook.com
Researchers Test Colombian Village With High Alzheimer's Rates

Researchers Test Colombian Village With High Alzheimer's Rates

AFP (Dec. 19, 2014) In Yarumal, a village in N. Colombia, Alzheimer's has ravaged a disproportionately large number of families. A genetic "curse" that may pave the way for research on how to treat the disease that claims a new victim every four seconds. Duration: 02:42 Video provided by AFP
Powered by NewsLook.com
Double-Amputee Becomes First To Move Two Prosthetic Arms With His Mind

Double-Amputee Becomes First To Move Two Prosthetic Arms With His Mind

Buzz60 (Dec. 19, 2014) A double-amputee makes history by becoming the first person to wear and operate two prosthetic arms using only his mind. Jen Markham has the story. Video provided by Buzz60
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Health & Medicine

Mind & Brain

Living & Well

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins