Navigation Links
Smoking is major risk factor for stroke in China
Date:3/6/2008

Smoking is a major risk factor for stroke in China, accounting for about one in seven strokes in men, researchers reported in Stroke: Journal of the American Heart Association.

This study shows that smoking prevention and cessation could be an important approach to reducing the societal burden of stroke, said Jiang He, M.D., Ph.D., senior author of the study.

Many studies in western populations have shown that cigarette smoking is a strong and independent risk factor for stroke. But the relationship between cigarette smoking and stroke hasnt been well-studied in Asian populations including China, where stroke is the second leading cause of death.

The study findings were consistent with reports from other populations, but in China this risk creates a huge public health problem, said He, the Joseph S. Copes Chair and professor of epidemiology at Tulane University School of Public Health and Tropical Medicine in New Orleans, La. In addition to being the worlds most populous nation, China is the worlds leading producer and consumer of cigarettes.

Researchers from Tulane and the Chinese Academy of Medical Sciences in Beijing studied a representative sample of 83,533 men and 86,336 women, 40 years and older, from 17 provinces in mainland China. The participants were part of the third China National Hypertension Survey.

Researchers collected information on cigarette smoking and other health data when the study began in 1991. At that time, 59.1 percent of men and 13 percent of women reported being current smokers. The researchers followed participants for an average 8.3 years, during which time 6,780 strokes occurred, 3,979 of them fatal. After adjusting for other stroke-related factors, such as age and blood pressure, cigarette smoking was found to be a significant predictor of stroke.

Cigarette smoking accounted for 14.2 percent of strokes and 7.1 percent of stroke fatalities in men, and 3.1 percent of strokes and 2.4 percent of stroke deaths in women.

The longer and heavier a persons smoking habit, the higher the risk of stroke, the researchers found. Compared with never-smokers, the risk of stroke increased:

  • 21 percent for those smoking 119 cigarettes per day and
  • 36 percent for those smoking 20 or more cigarettes per day.

Researchers also analyzed pack-years, a measure of the number of 20-cigarette packs smoked per day times the number of years smoked. Smoking half a pack daily for 20 years or one pack daily for 10 years would both be calculated as 10 pack-years. They found that, compared with never-smokers, the risk of stroke increased:

  • 18 percent for those smoking 111 pack-years;
  • 25 percent for those smoking 1226 pack-years; and
  • 34 percent for those smoking more than 26 pack-years.

The relationship between the amount of smoking and stroke risk was strongest for ischemic stroke, caused when a blood clot blocks the circulation of blood to part of the brain. Participants who smoked a pack or more per day were 51 percent more likely to suffer an ischemic stroke.

Researchers found a less significant association between the amount a person had smoked and the risk of hemorrhagic stroke, caused by rupture of a blood vessel in the brain. Smoking a pack or more per day raised the risk of hemorrhagic stroke by 20 percent.

Of the stroke risk factors that can be modified, cigarette smoking is probably second only to hypertension, He said.

Anti-smoking campaigns are ongoing, but it is rare to see any anti-smoking message in government-owned television or newspapers. Most Chinese still do not understand the risk associated with cigarette smoking.

Based on relative risk and prevalence of cigarette smoking, authors conclude that prevention and cessation efforts could reduce stroke deaths by almost 5 percent, according to the study.

Participants in the National China Hypertension Study included people from all 30 provinces of mainland China, but this analysis could only be performed on those from the 17 provinces that collected contact information. The researchers found that the complete group was similar to the group analyzed in the initial evaluation.


'/>"/>

Contact: Bridgette McNeill
bridgette.mcneill@heart.org
214-706-1135
American Heart Association
Source:Eurekalert

Related medicine news :

1. Smoking may strongly increase long-term risk of eye disease
2. Smoking increases risks for head and neck cancers for men and women
3. Smoking Boosts Risk for Head, Neck Cancers
4. AUDIO from Medialink and Commit Lozenge: Wanna Quit Smoking With Therapeutic Nicotine? Just Follow the Directions
5. Passive smoking increases sleep disturbance among pregnant women
6. Teens who see more smoking in movies may have increased risk of becoming established smokers
7. Smoking in Movies May Put Teens at Risk
8. Test Spots Genetic Damage Done by Smoking
9. Scientists demonstate link between genetic variant and effectiveness of smoking cessation meds
10. Muslim Groups Kick Off Ramadan With Anti-Smoking Initiative
11. Smoking can harm the long-term effects of some oral surgery procedures
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/26/2016)... ... 26, 2016 , ... Brent Kasmer, a legally blind and certified personal trainer is helping to ... app. The fitness app plans to fix the two major problems leading the fitness industry ... fits all type program , They don’t eliminate all the reasons people quit ...
(Date:6/25/2016)... (PRWEB) , ... June 25, 2016 , ... The temporary closing of Bruton Memorial Library ... City Observer , brings up a new, often overlooked aspect of head lice: the parasite’s ... for fumigation is not a common occurrence, but a necessary one in the event that ...
(Date:6/25/2016)... ... June 25, 2016 , ... Dr. ... from injury. Recently, he has implemented orthobiologic procedures as a method for treating ... one of the first doctors to perform the treatment. Orthobiologics are substances that ...
(Date:6/24/2016)... , ... June 24, 2016 , ... Those who have ... these feelings, many turn to unhealthy avenues, such as drug or alcohol abuse, as ... Michigan, has released tools for healthy coping following a traumatic event. , Trauma sufferers ...
(Date:6/24/2016)... ... , ... Global law firm Greenberg Traurig, P.A. announced that 20 Florida attorneys ... peers for this recognition are considered among the top 2 percent of lawyers practicing ... members of this year’s Legal Elite Hall of Fame: Miami Shareholders Mark D. ...
Breaking Medicine News(10 mins):
(Date:6/23/2016)... -- Research and Markets has announced the addition ... to their offering. The ... commercial environment for MedImmune to enter. The US ageing population ... to drive considerable growth for effective anti-influenza medications. The introduction ... considerably, but development is still in its infancy. ...
(Date:6/23/2016)... and INDIANAPOLIS , June 23, 2016 ... Lilly Diabetes Tomorrow,s Leaders Scholarship is any indication, the ... announced today online at www.diabetesscholars.org by the ... diabetes stand in the way of academic and community ... Foundation,s scholarship program since 2012, and continues to advocate ...
(Date:6/23/2016)... June 23, 2016  Guerbet announced today that it ... Supplier Horizon Award . One of 12 ... recognized for its support of Premier members through exceptional ... excellence, and commitment to lower costs. ... recognition of our outstanding customer service from Premier," says ...
Breaking Medicine Technology: