Featured Research

from universities, journals, and other organizations

Smoking associated with more rapid cognitive decline in men

Date:
February 6, 2012
Source:
JAMA and Archives Journals
Summary:
Smoking in men appears to be associated with more rapid cognitive decline, according to a new report.

Smoking in men appears to be associated with more rapid cognitive decline, according to a report published Online First by Archives of General Psychiatry, one of the JAMA/Archives journals.

Smoking is increasingly recognized as a risk factor for dementia in the elderly and the number of dementia cases worldwide, estimated at 36 million in 2010, is on the rise and is projected to double every 20 years, the authors write in their study background.

Sιverine Sabia, Ph.D., of University College London, and colleagues used the Whitehall II cohort study, which is based on employees of the British Civil Service. The authors examined the association between smoking history and cognitive decline in the transition from midlife to old age. Data were obtained from 5,099 men and 2,137 women in the Whitehall II study, with a mean (average) age of 56 years at the first cognitive assessment.

In the current study, researchers analyzed data using six assessments of smoking status over 25 years and three cognitive assessments over 10 years.

The authors note their analysis presents four key findings. They suggest smoking in men is associated with more rapid cognitive decline and that men who continued to smoke over the follow-up experienced greater decline in all cognitive tests.

In addition, men who quit smoking in the 10 years preceding the first cognitive measure were still at risk of greater cognitive decline, especially in executive function (an umbrella term for various complex cognitive processes involved in achieving a particular goal). However, long-term ex-smokers did not show faster cognitive decline.

"Finally, our results show that the association between smoking and cognition, particularly at older ages, is likely to be underestimated owing to higher risk of death and dropout among smokers," the authors comment.

The authors also note that their results show no association between smoking and cognitive decline in women, although the underlying reasons remain unclear. They suggest one explanation for the sex difference they observed might be the greater quantity of tobacco smoked by men.


Story Source:

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


Journal Reference:

  1. S. Sabia, A. Elbaz, A. Dugravot, J. Head, M. Shipley, G. Hagger-Johnson, M. Kivimaki, A. Singh-Manoux. Impact of Smoking on Cognitive Decline in Early Old Age: The Whitehall II Cohort Study. Archives of General Psychiatry, 2012; DOI: 10.1001/archgenpsychiatry.2011.2016

Cite This Page:

JAMA and Archives Journals. "Smoking associated with more rapid cognitive decline in men." ScienceDaily. ScienceDaily, 6 February 2012. <www.sciencedaily.com/releases/2012/02/120206164624.htm>.
JAMA and Archives Journals. (2012, February 6). Smoking associated with more rapid cognitive decline in men. ScienceDaily. Retrieved April 19, 2014 from www.sciencedaily.com/releases/2012/02/120206164624.htm
JAMA and Archives Journals. "Smoking associated with more rapid cognitive decline in men." ScienceDaily. www.sciencedaily.com/releases/2012/02/120206164624.htm (accessed April 19, 2014).

Share This



More Health & Medicine News

Saturday, April 19, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Nine-Month-Old Baby Can't Open His Mouth

Nine-Month-Old Baby Can't Open His Mouth

Newsy (Apr. 19, 2014) — Nine-month-old Wyatt Scott was born with a rare disorder called congenital trismus, which prevents him from opening his mouth. Video provided by Newsy
Powered by NewsLook.com
'Holy Grail' Of Weight Loss? New Find Could Be It

'Holy Grail' Of Weight Loss? New Find Could Be It

Newsy (Apr. 18, 2014) — In a potential breakthrough for future obesity treatments, scientists have used MRI scans to pinpoint brown fat in a living adult for the first time. Video provided by Newsy
Powered by NewsLook.com
Little Progress Made In Fighting Food Poisoning, CDC Says

Little Progress Made In Fighting Food Poisoning, CDC Says

Newsy (Apr. 18, 2014) — A new report shows rates of two foodborne infections increased in the U.S. in recent years, while salmonella actually dropped 9 percent. Video provided by Newsy
Powered by NewsLook.com
Scientists Create Stem Cells From Adult Skin Cells

Scientists Create Stem Cells From Adult Skin Cells

Newsy (Apr. 17, 2014) — The breakthrough could mean a cure for some serious diseases and even the possibility of human cloning, but it's all still a way off. Video provided by Newsy
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:
from the past week

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