Lower risk of dementia for married or cohabiting people

Jul 03, 2009

(PhysOrg.com) -- People who live alone have twice the risk of developing dementia and Alzheimer's disease in later life compared with married or cohabiting people, according to a research study led by Miia Kivipelto from Karolinska Institutet and published on the prominent British Medical Journal's website, bmj.com.

According to Kivipelto, being widowed or divorced in mid-life carries three times the risk of developing .

While there have been a number of studies linking being in a couple to good health and longevity this is the first study to focus on marital status and the risk of dementia.

The research group, from Finland and Sweden, interviewed a random sample of men and women derived from a group of 2000 adults. The participants came from two regions in Eastern Finland. They were initially surveyed at around 50 years of age and again around 21 years later. Participants were divided into the following groups: married/cohabitant, single, divorced or widowed. The team also investigated whether there was a link between living alone and being a carrier of the apolipoprotein E e4 gene variant (or allele), the known genetic risk factor for Alzheimer's disease.

The results reveal that people living without a partner during middle age had a higher risk of developing in late life compared to those living with a partner. Individuals who become widowed at this age are three times more likely to develop dementia. The study also concludes that carriers of apolipoprotein E e4 gene variant who lose their partners and remain living alone have the highest risk of developing Alzheimer's disease.

These results are important for preventing dementia and cognitive impairment. As Kivipelto explains, we now know that it would be worth offering supportive intervention for individuals who have lost a partner.

As life expectancy increases in various regions of the world, dementia is becoming a growing health concern. In 2005 an estimated 25 million people had dementia, and the number is expected to reach 81.1 million by 2040.

Provided by Karolinska Institutet (news : web)

Explore further: Sierra Leone reaches final day of Ebola lockdown

add to favorites email to friend print save as pdf

Related Stories

Alzheimer's disease risks are gender specific

May 01, 2008

The risks of developing Alzheimer’s disease differ between the sexes, with stroke in men, and depression in women, critical factors, suggests research published ahead of print in the Journal of Neurology Neurosurgery an ...

Education protects against pre-Alzheimer's memory loss

Oct 20, 2008

ST. PAUL, Minn. – People with more education and more mentally demanding occupations may have protection against the memory loss that precedes Alzheimer's disease, according to a study published in the October 21, 2008, ...

Recommended for you

Sierra Leone reaches final day of Ebola lockdown

20 minutes ago

Frustrated residents complained of food shortages in some neighborhoods of Sierra Leone's capital on Sunday as the country reached the third and final day of a sweeping, unprecedented lockdown designed to ...

Sierra Leone faces criticism over Ebola shutdown

Sep 20, 2014

Sierra Leone began the second day of a 72-hour nationwide shutdown aimed at containing the spread of the deadly Ebola virus on Saturday amid criticism that the action was a poorly planned publicity stunt.

Presence of peers ups health workers' hand hygiene

Sep 19, 2014

(HealthDay)—The presence of other health care workers improves hand hygiene adherence, according to a study published in the October issue of Infection Control and Hospital Epidemiology.

Sierra Leone streets deserted as shutdown begins

Sep 19, 2014

Sierra Leone's normally chaotic capital resembled a ghost town on Friday as residents were confined to their homes for the start of a three-day lockdown aimed at halting the deadly Ebola epidemic.

User comments : 1

Adjust slider to filter visible comments by rank

Display comments: newest first

superhuman
5 / 5 (1) Jul 03, 2009
Living with a partner "might imply cognitive and social challenges" that help shield against dementia, but why this could be so has to be explained, the authors say.

As usual with such studies causality may run both ways. Those with predisposition to future cognitive problems make have some negative traits which manifest themselves early and which make them less likely to find/retain a partner. For example it could be higher irritability, extreme timidness, frequent mood swings, etc.