Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Lower IQ and poorer cardiovascular fitness in teen years increase risk of early-onset dementia

10.03.2014

Men who at the age of 18 years have poorer cardiovascular fitness and/or a lower IQ more often suffer from dementia before the age of 60. This is shown in a recent study encompassing more than one million Swedish men.

In several extensive studies, researchers at the Sahlgrenska Academy of The University of Gothenburg have previously analyzed Swedish men's conscription results and were able to show a correlation between cardiovascular fitness as a teenager and health problems in later life.


Jenny Nyberg, Ph.D. and Researcher at Sahlgrenska Academy, Gothenburg University

The University of Gothenburg

Increased risk for early-onset dementia

In their latest study, based on data from 1.1 million young Swedish men, the Gothenburg researcher team shows that those with poorer cardiovascular fitness and/or lower IQ in their teenage years more often suffer from early-onset dementia.

... more about:
»IQ »cognitive »dementia »ethnic »risk

"Previous studies have shown the correlation between cardiovascular fitness and the risk of dementia in old age. Now, for the first time, we can show that the increased risk also applies to early-onset dementia and its precursors," says Sahlgrenska Academy researcher Jenny Nyberg, who headed the study.

Controlled for other risk factors

Expressed in figures, the study shows that men who when conscripted had poorer cardiovascular fitness were 2.5 times more likely to develop early-onset dementia later in life. A lower IQ entailed a 4 times greater risk, and a combination of both poor cardiovascular fitness and low IQ entailed a 7 times greater risk of early-onset dementia.

The increased risk remained even when controlled for other risk factors, such as heredity, medical history, and social-economic circumstances.

Fitness strengthens the brain

"We already knew that physical and cognitive exercise reduces the risk of neurological disease. Physical exercise increases nerve cell complexity and function and even generation of new nerve cells in the adult brain, which strengthens our mental and physiological functions. In other words, good cardiovascular fitness makes the brain more resistant to damage and disease," says Prof. Georg Kuhn, senior author of the study.

Overlooked group

People who develop early-onset dementia are often of working age and can have children still living at home, which means the consequences for both the sufferers and their families are even more serious. Despite this, patients with early-onset dementia are a relatively overlooked group.

"This makes it important to initiate more research into how physical and mental exercise can affect the prevalence of different types of dementia. Perhaps exercise can be used as both a prophylactic and a treatment for those in the risk zone for early-onset dementia," says Nyberg.

The article Cardiovascular and cognitive fitness at age 18 and risk of early-onset dementia was published online in the scientific journal Brain on 7 March.

Link to article: http://brain.oxfordjournals.org/content/early/2014/03/06/brain.awu041.abstract

FACTS ABOUT DEMENTIA AND THE QUOTED STUDY
Dementia is not a disease but a group of different diseases characterized by the gradual worsening of cognitive abilities. Dementia is seen across all ethnic groups and increasingly so with advancing age. Among 65–69-year-olds, about 2 percent are afflicted, with this figure doubling for every five years of age.

The quoted study encompassed all Swedish men conscripted for mandatory military service between the years 1968 and 2005, a total of 1.1 million individuals. In the study, the researchers have compared the results from the conscripts' cardiovascular fitness and IQ tests with information from national disease registries. During the study period, a total of 660 men were diagnosed with early-onset dementia.

Contact:
Jenny Nyberg, Ph.D. and Researcher at Sahlgrenska Academy, The University of Gothenburg, jenny.nyberg@neuro.gu.se

Georg Kuhn, Professor and Researcher at Sahlgrenska Academy, The University of Gothenburg, georg.kuhn@neuro.gu.se

Weitere Informationen:

http://sahlgrenska.gu.se/english/news_and_events/news/News_Detail/?languageId=10...

Krister Svahn | idw - Informationsdienst Wissenschaft

Further reports about: IQ cognitive dementia ethnic risk

More articles from Health and Medicine:

nachricht Real-time imaging of lung lesions during surgery helps localize tumors and improve precision
30.07.2015 | American Association for Thoracic Surgery

nachricht Experimental MERS vaccine shows promise in animal studies
29.07.2015 | NIH/National Institute of Allergy and Infectious Diseases

All articles from Health and Medicine >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Quantum Matter Stuck in Unrest

Using ultracold atoms trapped in light crystals, scientists from the MPQ, LMU, and the Weizmann Institute observe a novel state of matter that never thermalizes.

What happens if one mixes cold and hot water? After some initial dynamics, one is left with lukewarm water—the system has thermalized to a new thermal...

Im Focus: On the crest of the wave: Electronics on a time scale shorter than a cycle of light

Physicists from Regensburg and Marburg, Germany have succeeded in taking a slow-motion movie of speeding electrons in a solid driven by a strong light wave. In the process, they have unraveled a novel quantum phenomenon, which will be reported in the forthcoming edition of Nature.

The advent of ever faster electronics featuring clock rates up to the multiple-gigahertz range has revolutionized our day-to-day life. Researchers and...

Im Focus: Superfast fluorescence sets new speed record

Plasmonic device has speed and efficiency to serve optical computers

Researchers have developed an ultrafast light-emitting device that can flip on and off 90 billion times a second and could form the basis of optical computing.

Im Focus: Unlocking the rice immune system

Joint BioEnergy Institute study identifies bacterial protein that is key to protecting rice against bacterial blight

A bacterial signal that when recognized by rice plants enables the plants to resist a devastating blight disease has been identified by a multi-national team...

Im Focus: Smarter window materials can control light and energy

Researchers in the Cockrell School of Engineering at The University of Texas at Austin are one step closer to delivering smart windows with a new level of energy efficiency, engineering materials that allow windows to reveal light without transferring heat and, conversely, to block light while allowing heat transmission, as described in two new research papers.

By allowing indoor occupants to more precisely control the energy and sunlight passing through a window, the new materials could significantly reduce costs for...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

3rd Euro Bio-inspired - International Conference and Exhibition on Bio-inspired Materials

23.07.2015 | Event News

Clash of Realities – International Conference on the Art, Technology and Theory of Digital Games

10.07.2015 | Event News

World Conference on Regenerative Medicine in Leipzig: Last chance to submit abstracts until 2 July

25.06.2015 | Event News

 
Latest News

Tool making and additive technology exhibition: Fraunhofer IPT at Formnext

31.07.2015 | Trade Fair News

First Siemens-built Thameslink train arrives in London

31.07.2015 | Transportation and Logistics

California 'rain debt' equal to average full year of precipitation

31.07.2015 | Physics and Astronomy

VideoLinks
B2B-VideoLinks
More VideoLinks >>>