The study involves 506 older people who did not have dementia when first examined. The group was given questionnaires about their personality traits and lifestyle. The personality questions identified people with different degrees of neuroticism, a term meaning easily distressed.
The questions also measured extraversion, or openness to talking to people. Those who were not easily distressed were calm and self-satisfied, whereas people who were easily distressed were emotionally unstable, negative and nervous. Outgoing people scored high on the extraversion scale and were socially active and optimistic compared to people with low extraversion who were reserved and introspective.
The lifestyle questionnaire determined how often each person regularly participated in leisure or organizational activities and the richness of their social network. Participants were followed for six years. During that time, 144 developed dementia.
The study found that people who were not socially active but calm and relaxed had a 50 percent lower risk of developing dementia compared with people who were isolated and prone to distress. The dementia risk was also 50 percent lower for people who were outgoing and calm compared to those who were outgoing and prone to distress.
“In the past, studies have shown that chronic distress can affect parts of the brain, such as the hippocampus, possibly leading to dementia, but our findings suggest that having a calm and outgoing personality in combination with a socially active lifestyle may decrease the risk of developing dementia even further,” says study author Hui-Xin Wang, PhD, with the Karolinska Institute in Stockholm, Sweden.
“The good news is, lifestyle factors can be modified as opposed to genetic factors which cannot be controlled. But these are early results, so how exactly mental attitude influences risk for dementia is not clear,” said Wang.
It is estimated that one in seven Americans aged 71 and older has some form of dementia. The number of Americans nearing that age is expected to double by the year 2030.
The study was supported by the Swedish Council for Working Life and Social Research, the Alzheimer Foundation Sweden, the Swedish Brain Power, Swedish Research Council, Gamla Tjänarinnor Foundation, Fredrik and Ingrid Thurings Foundation, the Foundation for Geriatric Diseases and Loo and Hans Osterman Foundation for Geriatric Research at Karolinska Institute, and the Center for Health Care Science at Karolinska Institute.
The American Academy of Neurology, an association of more than 21,000 neurologists and neuroscience professionals, is dedicated to promoting the highest quality patient-centered neurologic care. A neurologist is a doctor with specialized training in diagnosing, treating and managing disorders of the brain and nervous system such as Parkinson’s disease, ALS (Lou Gehrig’s disease), dementia, West Nile virus, and ataxia.
Rachel Seroka | American Academy of Neurology
The importance of biodiversity in forests could increase due to climate change
17.11.2017 | Deutsches Zentrum für integrative Biodiversitätsforschung (iDiv) Halle-Jena-Leipzig
Win-win strategies for climate and food security
02.10.2017 | International Institute for Applied Systems Analysis (IIASA)
The formation of stars in distant galaxies is still largely unexplored. For the first time, astron-omers at the University of Geneva have now been able to closely observe a star system six billion light-years away. In doing so, they are confirming earlier simulations made by the University of Zurich. One special effect is made possible by the multiple reflections of images that run through the cosmos like a snake.
Today, astronomers have a pretty accurate idea of how stars were formed in the recent cosmic past. But do these laws also apply to older galaxies? For around a...
Just because someone is smart and well-motivated doesn't mean he or she can learn the visual skills needed to excel at tasks like matching fingerprints, interpreting medical X-rays, keeping track of aircraft on radar displays or forensic face matching.
That is the implication of a new study which shows for the first time that there is a broad range of differences in people's visual ability and that these...
Computer Tomography (CT) is a standard procedure in hospitals, but so far, the technology has not been suitable for imaging extremely small objects. In PNAS, a team from the Technical University of Munich (TUM) describes a Nano-CT device that creates three-dimensional x-ray images at resolutions up to 100 nanometers. The first test application: Together with colleagues from the University of Kassel and Helmholtz-Zentrum Geesthacht the researchers analyzed the locomotory system of a velvet worm.
During a CT analysis, the object under investigation is x-rayed and a detector measures the respective amount of radiation absorbed from various angles....
The quantum world is fragile; error correction codes are needed to protect the information stored in a quantum object from the deteriorating effects of noise. Quantum physicists in Innsbruck have developed a protocol to pass quantum information between differently encoded building blocks of a future quantum computer, such as processors and memories. Scientists may use this protocol in the future to build a data bus for quantum computers. The researchers have published their work in the journal Nature Communications.
Future quantum computers will be able to solve problems where conventional computers fail today. We are still far away from any large-scale implementation,...
Pillared graphene would transfer heat better if the theoretical material had a few asymmetric junctions that caused wrinkles, according to Rice University...
15.11.2017 | Event News
15.11.2017 | Event News
30.10.2017 | Event News
17.11.2017 | Physics and Astronomy
17.11.2017 | Health and Medicine
17.11.2017 | Studies and Analyses