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Boadcast: Jan 21, 2003
By George Grow

This is Sarah Long.

VOICE TWO:

And this is Bob Doughty1 with SCIENCE IN THE NEWS, a VOA Special English program about recent developments in science. Today, we tell about the health effects of smoking tobacco products. We also offer advice about how to stop smoking.

VOICE ONE:

For many years, scientists have warned that smoking tobacco is bad for your health. Yet people around the world continue to smoke. The World Health Organization estimates that almost five-million people around the world die each year from the effects of smoking. That number is increasing. W-H-O officials say tobacco use will kill more than eight-million people a year by two-thousand-twenty if nothing is done to control the problem.

In the United States, more than forty-six-million adults currently2 smoke. American health experts say tobacco use is the leading preventable cause of death in the United States. This year, an estimated four-hundred-forty-thousand Americans will die of diseases linked to smoking.

VOICE TWO:

Smoking tobacco is the leading cause of lung disease. Smoking also has been linked to heart disease, stroke and many kinds of cancer. The American Cancer Society says smoking is responsible for about eighty-seven percent of all lung cancers in the United States. The group adds that smoking is a major cause of cancers of the mouth, esophagus1, kidney2, bladder and pancreas3. Scientists have identified more than forty chemicals in tobacco smoke that cause cancer in humans and animals. Smokeless tobacco and cigars also have been linked to cancer.

VOICE ONE:

American government health experts say smoking affects not only the smoker3. Women who smoke cigarettes during pregnancy5 are more likely to have babies with health problems. Pregnant4 women who smoke are at risk of having a baby who weighs less than normal. Low birth weight babies have an increased risk of early death and may suffer from a number of health disorders5.

Experts say tobacco smoke also affects the health of people who do not smoke. Smokers6 may harm the health of family members and people at work when they breathe out smoke from cigarettes. This is called "second-hand7 smoke." Tobacco smoke causes an estimated three-thousand non-smoking Americans to die of lung cancer each year. Tobacco smoke also causes lung infections in as many as three-hundred-thousand American children each year.

The American Cancer Society says there is no safe way to smoke. It says smoking begins to cause damage immediately. All cigarettes can damage the body. Smoking even a small number of cigarettes is dangerous.

(MUSIC)

VOICE TWO:

Nicotine6 is the major substance in cigarettes that gives pleasure to smokers. Nicotine8 is a poison. The American Cancer Society says nicotine can kill a person when taken in large amounts. It does this by stopping the muscles used for breathing.

The body grows to depend on nicotine. When a former smoker smokes a cigarette, the nicotine reaction may start again, forcing the person to keep smoking.

Studies have found that nicotine can be as powerful as alcohol or the illegal drug cocaine10. So experts say it is better not to start smoking and become dependent on nicotine than it is to smoke with the idea of stopping later.

VOICE ONE:

Most people who smoke have heard about the harmful effects of cigarettes. Some of them decide to smoke fewer cigarettes. However, most smokers find that is difficult. Experts say menthol6 cigarettes are no safer than other tobacco products. Menthol cigarettes produce a cool feeling in the smoker's throat. People who use menthol cigarettes can hold the smoke inside their lungs longer than smokers of other cigarettes. As a result, experts say menthol cigarettes may be even more dangerous.

VOICE TWO:

Other smokers believe that cigarettes with low tar9 levels are safer. Tar is a substance produced when tobacco leaves are burned. It is known to cause cancer.

        In two-thousand-one, the National Cancer Institute released a report about low tar cigarettes. It found that people who smoke these cigarettes do not reduce their risk of getting smoking-related diseases. In fact, some people who use low tar or low nicotine cigarettes often smoke more. The report found no evidence that changes in cigarette design and production during the past fifty years have improved public health.

(MUSIC)

VOICE ONE:

It is not easy to stop smoking permanently11. However, doctors say you probably will live longer if you do stop smoking. You will feel better and look better. You also will protect the health of family members and others who breathe your smoke.

The American Cancer Society says the sooner smokers stop smoking, the more they can reduce their chances of getting cancer and other diseases. It says blood pressure returns to normal twenty minutes after smoking the last cigarette.

Carbon monoxide7 gas levels in the blood return to normal after eight hours. After one day, the chance of heart attack decreases. After one year, the risk of heart disease for a non-smoker is half that of a smoker.

VOICE TWO:

Experts say there are several products designed to help end a smoker's dependency on cigarettes. There are several kinds of nicotine replacement12 products that provide small amounts of the substance. These can help people stop smoking.

For example, smokers can place small, specially13 treated pieces of material on their skin. They can chew or swallow other products that contain nicotine. Or they can breathe small amounts of nicotine through their nose or mouth.

VOICE ONE:

A drug to fight depression has proved effective for many smokers. Depression is the mental condition that causes extreme sadness and hopelessness. The anti-depressant drug is called Zyban. It does not contain nicotine. The drug works by increasing levels of the chemical dopamine in the brain. Dopamine produces feelings of pleasure. Studies have shown that Zyban reduces the urge to smoke for some people.

There is strong evidence that people who have suffered from depression are much more likely than other people to smoke. The same is true for people who have brain disorders such as schizophrenia8. Doctors say these people can think better and feel better when they are smoking. It also is much harder for them to stop smoking than it is for other people.

(MUSIC)

VOICE TWO:

We have some other ideas to help you stop smoking. The American Cancer Society says there is not just one right way to stop. It says one method or a combination of methods may be successful. They include attending self-help programs or following directions in a book. The group says any way to stop smoking that is legal, moral and effective is worth trying.

To stop smoking, you should carefully plan your actions for at least one week. Try to stay away from people and situations that might trouble you. Do not go to public places where people are smoking. If you drink alcohol, you probably will need to stop drinking temporarily. Many people lose their inner strength when they drink alcohol.

VOICE ONE:

Many experts say it is best to stop smoking completely. Even one cigarette can make you a smoker again. In the first week or two without cigarettes, you probably will feel terrible. You may be angry all the time or you may feel sad. You may have a headache or your stomach may feel sick. Do not lose hope. If you stay away from tobacco, those feelings will go away in a few weeks. Tell yourself that you will be happier as a non-smoker. Tell yourself that nicotine should not control your life.

VOICE TWO:

Move around as much as possible. Go for a quick walk or a run at least two times a day. Walking or running will make you breathe deeply. This will help clear the nicotine from your body. Also, when you have the urge to smoke, you could chew gum or eat a piece of fruit or vegetable instead.

For a long time, you will continue to have periods when you really want a cigarette. Yet these times will come less often. One day, you will recognize that you have won the struggle against smoking.

VOICE ONE:

This SCIENCE IN THE NEWS program was written and produced by George Grow. This is Sarah Long.

VOICE TWO:

And this is Bob Doughty. Join us again next week for more news about science in Special English on the Voice of America.
1. esophagus [i(:)5sCfE^Es] n. 食道
2. kidney [5kIdnI] n. 肾
3. pancreas [5pAnkriEs] n. [解]胰腺
4. pregnancy [5pre^nEnsI] n. 怀孕
5. nicotine [5nIkEtI:n] n. 烟碱
6. menthol [5menWCl] n. [化]薄荷醇
7. monoxide [mE5nRksaId] n. 一氧化物
8. schizophrenia [7skIzEu5fri:nIE] n. [心]精神分裂症


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点击收听单词发音收听单词发音  

1 doughty Jk5zg     
adj.勇猛的,坚强的
参考例句:
  • Most of successful men have the characteristics of contumacy and doughty.绝大多数成功人士都有共同的特质:脾气倔强,性格刚强。
  • The doughty old man battled his illness with fierce determination.坚强的老人用巨大毅力与疾病作斗争。
2 currently SvMzI2     
adv.通常地,普遍地,当前
参考例句:
  • Currently it is not possible to reconcile this conflicting evidence.当前还未有可能去解释这一矛盾的例证。
  • Our contracts are currently under review.我们的合同正在复查。
3 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。
4 pregnant IP3xP     
adj.怀孕的,怀胎的
参考例句:
  • She is a pregnant woman.她是一名孕妇。
  • She is pregnant with her first child.她怀了第一胎。
5 disorders 6e49dcafe3638183c823d3aa5b12b010     
n.混乱( disorder的名词复数 );凌乱;骚乱;(身心、机能)失调
参考例句:
  • Reports of anorexia and other eating disorders are on the increase. 据报告,厌食症和其他饮食方面的功能紊乱发生率正在不断增长。 来自《简明英汉词典》
  • The announcement led to violent civil disorders. 这项宣布引起剧烈的骚乱。 来自《简明英汉词典》
6 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。
7 second-hand second-hand     
adj.用过的,旧的,二手的
参考例句:
  • I got this book by chance at a second-hand bookshop.我赶巧在一家旧书店里买到这本书。
  • They will put all these second-hand goods up for sale.他们将把这些旧货全部公开出售。
8 nicotine QGoxJ     
n.(化)尼古丁,烟碱
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。
  • 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。
9 tar 1qOwD     
n.柏油,焦油;vt.涂或浇柏油/焦油于
参考例句:
  • The roof was covered with tar.屋顶涂抹了一层沥青。
  • We use tar to make roads.我们用沥青铺路。
10 cocaine VbYy4     
n.可卡因,古柯碱(用作局部麻醉剂)
参考例句:
  • That young man is a cocaine addict.那个年轻人吸食可卡因成瘾。
  • Don't have cocaine abusively.不可滥服古柯碱。
11 permanently KluzuU     
adv.永恒地,永久地,固定不变地
参考例句:
  • The accident left him permanently scarred.那次事故给他留下了永久的伤疤。
  • The ship is now permanently moored on the Thames in London.该船现在永久地停泊在伦敦泰晤士河边。
12 replacement UVxxM     
n.取代,替换,交换;替代品,代用品
参考例句:
  • We are hard put to find a replacement for our assistant.我们很难找到一个人来代替我们的助手。
  • They put all the students through the replacement examination.他们让所有的学生参加分班考试。
13 specially Hviwq     
adv.特定地;特殊地;明确地
参考例句:
  • They are specially packaged so that they stack easily.它们经过特别包装以便于堆放。
  • The machine was designed specially for demolishing old buildings.这种机器是专为拆毁旧楼房而设计的。

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