吸烟影响心脏健康
文章来源:未知 文章作者:meng 发布时间:2010-02-02 01:08 字体: [ ]  进入论坛
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Smoking affects your cardiac心脏的 health both before and after a major event like a heart attack. But how much? And does cutting back instead of quitting have a positive effect as well? There are definitive1 answers in a new study from Tel Aviv University, the largest and most comprehensive广泛的,综合的 of its kind.

The research found that quitting smoking after a heart attack has about the same positive effect as other major interventions2干预,处置 such as lipid油脂-lowering agents like statins抑制素 or more invasive procedures. Study results were reported in the Journal of the American College of Cardiology心脏病学.

"It's really the most broad and eye-opening study of its kind," says Dr. Yariv Gerber of TAU's Sackler School of Medicine. "Smoking really decreases your life expectancy预期寿命 after a heart attack. Those who have never smoked have a 43% lower risk of succumbing屈服,死 after a heart attack, compared to the persistent5 smoker6."

But even those with a history of smoking can see their risk sharply decline once they give up the habit. "We found that people who quit smoking after their first heart attack had a 37% lower risk of dying from another, compared to those who continued to smoke," Dr. Gerber says.

Largest study of its kind

In the study, the researchers looked at data collected by TAU senior cardiologist Prof. Yaacov Drory. The data covered more than 1,500 patients, 65 years old or less, who were discharged from hospitals出院 in 1992 and 1993 in central Israel, all after their first acute myocardial infarction急性心肌梗塞. At the time of their first heart attack, 27% of the men in the study had never smoked, some 20% reported being former smokers7, while more than half admitted to being current smokers.

After leaving the hospital, the smokers attempted to quit. Among this group, 35% were able to abstain8放弃,自制 over the next decade or so. Analyzing9 data spanning横跨 more than 13 years, the researchers concluded that the greatest risk of death occurred in those people who continued to smoke, even when socioeconomic measures (education, employment and income), cardiovascular risk factors (hypertension过度紧张,高血压, obesity10肥胖 and exercise) and medical treatment were taken into consideration.

Those who quit smoking before the first heart attack had a 50% lower mortality rate, while those who quit after their heart attack lowered that rate by a whopping 37% compared with those who continued to smoke.

"Information to live with ― literally11"

In their study, researchers also quantified the effects of a reduction, as opposed to complete cessation停止,中断, in smoking. By cutting their habit by only five cigarettes a day, a smoker might see the likelihood可能性 of dying within the next 13 years decrease by 18%. The researchers caution, however, that continuing to smoke still carries the risks of cancer and lung disease, and doctors should urge that their patients quit entirely12.

"The burden of heart disease on our healthcare system is enormous. The overall impact of smoking on heart attacks and cardiac mortality is therefore much more significant than its impact on lung cancer," says Dr. Gerber. "The effect of smoking on heart health is actually a much bigger public health threat, and most people are not aware of this.

"The novel aspect in our study is that it is the first to show the benefit of a reduction in smoking," adds Dr. Gerber. "This is information that some smokers could live with ― literally. We would like people to consider cutting down as an initial step before complete cessation停止,中断, especially those who find it impossible to quit right away."



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1 definitive YxSxF     
adj.确切的,权威性的;最后的,决定性的
参考例句:
  • This book is the definitive guide to world cuisine.这本书是世界美食的权威指南。
  • No one has come up with a definitive answer as to why this should be so.至于为什么该这样,还没有人给出明确的答复。
2 interventions b4e9b73905db5b0213891229ce84fdd3     
n.介入,干涉,干预( intervention的名词复数 )
参考例句:
  • Economic analysis of government interventions deserves detailed discussion. 政府对经济的干预应该给予充分的论述。 来自辞典例句
  • The judge's frequent interventions made a mockery of justice. 法官的屡屡干预是对正义的践踏。 来自互联网
3 expectancy tlMys     
n.期望,预期,(根据概率统计求得)预期数额
参考例句:
  • Japanese people have a very high life expectancy.日本人的平均寿命非常长。
  • The atomosphere of tense expectancy sobered everyone.这种期望的紧张气氛使每个人变得严肃起来。
4 succumbing 36c865bf8da2728559e890710c281b3c     
不再抵抗(诱惑、疾病、攻击等)( succumb的现在分词 ); 屈从; 被压垮; 死
参考例句:
  • Mrs. Smith washed and ironed clothes for him, succumbing to him. 史密斯太太被他迷住了,愿意为他洗衣烫衣。
  • They would not in the end abandon their vital interests by succumbing to Soviet blandishment. 他们最终决不会受苏联人的甜言蜜语的诱惑,从而抛弃自己的切身利益。
5 persistent BSUzg     
adj.坚持不懈的,执意的;持续的
参考例句:
  • Albert had a persistent headache that lasted for three days.艾伯特连续头痛了三天。
  • She felt embarrassed by his persistent attentions.他不时地向她大献殷勤,使她很难为情。
6 smoker GiqzKx     
n.吸烟者,吸烟车厢,吸烟室
参考例句:
  • His wife dislikes him to be a smoker.他妻子不喜欢他当烟民。
  • He is a moderate smoker.他是一个有节制的烟民。
7 smokers d3e72c6ca3bac844ba5aa381bd66edba     
吸烟者( smoker的名词复数 )
参考例句:
  • Many smokers who are chemically addicted to nicotine cannot cut down easily. 许多有尼古丁瘾的抽烟人不容易把烟戒掉。
  • Chain smokers don't care about the dangers of smoking. 烟鬼似乎不在乎吸烟带来的种种危害。
8 abstain SVUzq     
v.自制,戒绝,弃权,避免
参考例句:
  • His doctor ordered him to abstain from beer and wine.他的医生嘱咐他戒酒。
  • Three Conservative MPs abstained in the vote.三位保守党下院议员投了弃权票。
9 analyzing be408cc8d92ec310bb6260bc127c162b     
v.分析;分析( analyze的现在分词 );分解;解释;对…进行心理分析n.分析
参考例句:
  • Analyzing the date of some socialist countries presents even greater problem s. 分析某些社会主义国家的统计数据,暴露出的问题甚至更大。 来自辞典例句
  • He undoubtedly was not far off the mark in analyzing its predictions. 当然,他对其预测所作的分析倒也八九不离十。 来自辞典例句
10 obesity Dv1ya     
n.肥胖,肥大
参考例句:
  • One effect of overeating may be obesity.吃得过多能导致肥胖。
  • Sugar and fat can more easily lead to obesity than some other foods.糖和脂肪比其他食物更容易导致肥胖。
11 literally 28Wzv     
adv.照字面意义,逐字地;确实
参考例句:
  • He translated the passage literally.他逐字逐句地翻译这段文字。
  • Sometimes she would not sit down till she was literally faint.有时候,她不走到真正要昏厥了,决不肯坐下来。
12 entirely entirely     
ad.全部地,完整地;完全地,彻底地
参考例句:
  • The fire was entirely caused by their neglect of duty. 那场火灾完全是由于他们失职而引起的。
  • His life was entirely given up to the educational work. 他的一生统统献给了教育工作。
TAG标签: heart smoking cardiac
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