Featured Research

from universities, journals, and other organizations

Smokers more than double their risk of burst aneurysm

Date:
August 29, 2012
Source:
BMJ-British Medical Journal
Summary:
Smoking more than 20 cigarettes a day doubles the risk of a potentially fatal brain bleed as a result of a burst aneurysm, new research finds.

Smoking more than 20 cigarettes a day doubles the risk of a potentially fatal brain bleed as a result of a burst aneurysm, finds research published online in the Journal of Neurology Neurosurgery and Psychiatry.

If a smoker quits, the risk diminishes over time, but it still persists suggests the study.

An aneurysm is a bulge in a weakened artery, which, if it bursts causes blood to leak into the brain. The chances of surviving a ruptured aneurysm are only about 50% and those who do survive often live with disability for the rest of their life.

The researchers base their findings on 426 cases of brain bleeds (subarachnoid haemorrhage), drawn from 33 hospitals across Korea between 2002 and 2004, and a comparison group of 426 people, matched for age and sex, who had not sustained a haemorrhage.

Detailed information on lifestyle, medical history and smoking habits were obtained from all participants whose average age was 50.

The number of smokers was greater in the brain bleed group, as were the proportions of those with a family history of stroke and high blood pressure.

Just under 38% of those who had had a brain bleed were current smokers, compared with one in four (just over 24%) of those in the comparison group.

After taking account of influential factors, such as salt intake, working hours, weight and family history of diabetes, smokers were almost three times as likely to have a brain bleed as non-smokers.

The impact of smoking was cumulative: the longer and more heavily a person had smoked, the greater was their risk of a brain bleed.

Quitting smoking cut the risk of a ruptured aneurysm by 59% after five or more years -- bringing it down to the level of non-smokers. But this was not the case among heavy smokers.

Those who had smoked 20 or more cigarettes a day were still more than twice as likely to have a ruptured aneurysm as those who had never smoked.

The authors point out that previous long term research has indicated that the risk of an aneurysm in former smokers disappears after 10 to 15 years. But these studies either included only one gender and/or included too few people to draw firm conclusions.

In the short term, smoking thickens blood and drives up blood pressure, both of which can increase the risk of a brain bleed. These effects can be reversed by stopping smoking.

But smoking also induces permanent changes in the structure of artery walls, say the authors. These changes may be greater in heavy smokers, they say.


Story Source:

The above story is based on materials provided by BMJ-British Medical Journal. Note: Materials may be edited for content and length.


Journal Reference:

  1. C. K. Kim, B. J. Kim, W.-S. Ryu, S.-H. Lee, B.-W. Yoon. Impact of smoking cessation on the risk of subarachnoid haemorrhage: a nationwide multicentre case control study. Journal of Neurology, Neurosurgery & Psychiatry, 2012; DOI: 10.1136/jnnp-2012-302538

Cite This Page:

BMJ-British Medical Journal. "Smokers more than double their risk of burst aneurysm." ScienceDaily. ScienceDaily, 29 August 2012. <www.sciencedaily.com/releases/2012/08/120829195212.htm>.
BMJ-British Medical Journal. (2012, August 29). Smokers more than double their risk of burst aneurysm. ScienceDaily. Retrieved October 21, 2014 from www.sciencedaily.com/releases/2012/08/120829195212.htm
BMJ-British Medical Journal. "Smokers more than double their risk of burst aneurysm." ScienceDaily. www.sciencedaily.com/releases/2012/08/120829195212.htm (accessed October 21, 2014).

Share This



More Mind & Brain News

Tuesday, October 21, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Your Birth Season Might Determine Your Temperament

Your Birth Season Might Determine Your Temperament

Newsy (Oct. 20, 2014) A new study says the season you're born in can determine your temperament — and one season has a surprising outcome. Video provided by Newsy
Powered by NewsLook.com
Court Ruling Means Kids' Online Activity Could Be On Parents

Court Ruling Means Kids' Online Activity Could Be On Parents

Newsy (Oct. 17, 2014) In a ruling attorneys for both sides agreed was a first of its kind, a Georgia appeals court said parents can be held liable for what kids put online. Video provided by Newsy
Powered by NewsLook.com
The Best Foods To Boost Your Mood

The Best Foods To Boost Your Mood

Buzz60 (Oct. 17, 2014) Feeling down? Reach for the refrigerator, not the medicine cabinet! TC Newman (@PurpleTCNewman) shares some of the best foods to boost your mood. Video provided by Buzz60
Powered by NewsLook.com
You Can Get Addicted To Google Glass, Apparently

You Can Get Addicted To Google Glass, Apparently

Newsy (Oct. 15, 2014) Researchers claim they’ve diagnosed the first example of the disorder in a 31-year-old U.S. Navy serviceman. 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:

Strange & Offbeat Stories


Health & Medicine

Mind & Brain

Living & Well

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