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Is Risk of Dementia Going Down?

Is Risk of Dementia Going Down?A surprising new Swedish study suggests the risk of developing dementia may have declined over the past 20 years.

That conclusion is based on improving cardiovascular detection and prevention and comes from data analysis of the SNAC-K, a longitudinal study on aging and health that started in 1987.

“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,” said researcher Chengxuan Qiu, M.D., Ph.D., of the Karolinska Institute medical 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 Swedish review, published in the journal Neurology, more than 3,000 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,” said Laura Fratiglioni, M.D., Ph.D., 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.”

Source: Karolinska Institutet

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Is Risk of Dementia Going Down?

Rick Nauert PhD

Rick Nauert, PhDDr. Rick Nauert has over 25 years experience in clinical, administrative and academic healthcare. He is currently an associate professor for Rocky Mountain University of Health Professionals doctoral program in health promotion and wellness. Dr. Nauert began his career as a clinical physical therapist and served as a regional manager for a publicly traded multidisciplinary rehabilitation agency for 12 years. He has masters degrees in health-fitness management and healthcare administration and a doctoral degree from The University of Texas at Austin focused on health care informatics, health administration, health education and health policy. His research efforts included the area of telehealth with a specialty in disease management.

APA Reference
Nauert PhD, R. (2015). Is Risk of Dementia Going Down?. Psych Central. Retrieved on October 24, 2018, from https://psychcentral.com/news/2013/04/22/is-risk-of-dementia-going-down/53976.html

 

Scientifically Reviewed
Last updated: 6 Oct 2015
Last reviewed: By John M. Grohol, Psy.D. on 6 Oct 2015
Published on PsychCentral.com. All rights reserved.