VOA慢速英语2009年-Health Report - Researchers Take a Closer

This is the VOA Special English Health Report.

You could fill a store with all the energy drinks now available. They promise to make people feel more energetic and think more clearly. These products have names like Red Bull, Monster, Ripped Force, Speed Stack and 5-Hour Energy. They appeal mainly to young people and are fueled mainly by caffeine.

Chad Reissig at Johns Hopkins University in Baltimore, Maryland, is a medical researcher who studies drug dependence¹. He says the team he works on got interested in studying energy drinks because of the explosion in their popularity in the last few years.

He say the researchers found three major things. One: there are hundreds of brands of energy drinks in most major countries. Two: the drinks are not clearly labeled with enough information. And three: the amount of caffeine varies greatly. Some contain as little as fifty milligrams, others as much as five hundred.

By comparison, a cup of Starbucks brewed² coffee contains three hundred thirty milligrams in four hundred seventy-three milliliters.

Some energy drinks contain a mixture of ingredients listed as an "energy blend." Ingredients like taurine, guarana and inositol are natural substances. But Chad Reissig says scientists do not know a lot about them and how they interact with each other and caffeine. And worse, he says, there is no listing of the amount of each ingredient.

Some people combine energy drinks with alcohol. They think they can drink more alcohol that way and not be affected³. Studies, however, suggest that they are still under the influence of the alcohol even if they do not feel that way.

Some makers⁴ of energy drinks do provide warnings. For example, a popular energy shot warns against use by people who are pregnant, nursing a baby or under the age of twelve. Energy shots are small bottles of liquid. The directions also advise people to limit caffeine products and to drink only half the bottle if they want a moderate amount of energy.

The team at Johns Hopkins University School of Medicine published a report in the journal Drug and Alcohol Dependence. They suggested better labeling with the amount of caffeine and other ingredients clearly listed on the drink. The researchers are continuing to study energy drinks. They are currently seeking young people who have had a bad experience after drinking them.

And that's the VOA Special English Health Report, written by Caty Weaver⁵. Transcripts⁶ and podcasts of our reports are at voaspecialenglish.com. I'm Steve Ember.

1 dependence   

n.依靠，依赖；信任，信赖；隶属

参考例句：

• Doctors keep trying to break her dependence of the drug.医生们尽力使她戒除毒瘾。
• He was freed from financial dependence on his parents.他在经济上摆脱了对父母的依赖。

2 brewed   

调制( brew的过去式和过去分词 )； 酝酿； 沏（茶）； 煮（咖啡）

参考例句：

• The beer is brewed in the Czech Republic. 这种啤酒是在捷克共和国酿造的。
• The boy brewed a cup of coffee for his mother. 这男孩给他妈妈冲了一杯咖啡。 来自《简明英汉词典》

3 affected   

adj.不自然的，假装的

参考例句：

• She showed an affected interest in our subject.她假装对我们的课题感到兴趣。
• His manners are affected.他的态度不自然。

4 makers   

n.制造者，制造商（maker的复数形式）

参考例句：

• The makers of the product assured us that there had been no sacrifice of quality. 这一产品的制造商向我们保证说他们没有牺牲质量。
• The makers are about to launch out a new product. 制造商们马上要生产一种新产品。 来自《简明英汉词典》

5 weaver   

n.织布工；编织者

参考例句：

• She was a fast weaver and the cloth was very good.她织布织得很快，而且布的质量很好。
• The eager weaver did not notice my confusion.热心的纺织工人没有注意到我的狼狈相。

6 transcripts   

n.抄本（ transcript的名词复数 ）；转写本；文字本；副本

参考例句：

• Like mRNA, both tRNA and rRNA are transcripts of chromosomal DNA. tRNA及rRNA同mRNA一样，都是染色体DNA的转录产物。 来自辞典例句
• You can't take the transfer students'exam without your transcripts. 没有成绩证明书，你就不能参加转学考试。 来自辞典例句