VOA慢速英语2010年-Health Report - Study Finds No Reason

This is the VOA Special English Health Report.

A miscarriage¹ is the natural loss of a pregnancy² before the twentieth week. This happens to as many as twenty percent of known pregnancies³.

Experts say many pregnancies end before a woman even knows she was pregnant.

Miscarriages⁴ are usually caused by chromosome⁵ problems that prevent the baby from developing. The online medical encyclopedia⁶ MedlinePlus says these problems are usually unrelated to the genes⁷ of either parent.

But whatever the reason, the loss of a pregnancy can be heartbreaking. And sometimes the advice that follows can be painful, too.

Some women are told to wait before trying to get pregnant again. A two thousand five report from the World Health Organization advised waiting at least six months. Some doctors advise a longer wait.

But a new study from the University of Aberdeen in Scotland found no need to delay. Researchers examined the medical records of thirty thousand women. These women visited Scottish hospitals from nineteen eighty-one to two thousand.

They had miscarriages in their first known pregnancies and became pregnant again.

Miscarriages take place in as many as 20 percent of known pregnancies

The study found that eighty-five percent of women who waited less than six months to get pregnant had live births. That was compared to seventy-three percent of women who waited more than two years.

Those who quickly became pregnant again were also less likely to have a pregnancy form in their fallopian tubes, a dangerous condition. And they were less likely to have a stillbirth, the loss of a fetus⁸ after twenty weeks.

They were also less likely to give birth by caesarean section. And they had fewer preterm births and fewer babies with low birth weight.

The report appears in BMJ, formerly⁹ the British Medical Journal.

The study found that about forty percent of women became pregnant again within six months. Twenty-five percent got pregnant within six to twelve months.

But the researchers point out that their results are limited to Scottish records and cannot be generalized to all women.

For example, compared to Western countries, women in developing countries start having children at an earlier age.

The Scottish women who quickly became pregnant again after a miscarriage were more likely to be older. Older women might be less likely to delay because they know that the older they get, the higher the risks.

And that's the VOA Special English Health Report, written by Caty Weaver¹⁰. You can find our reports at voaspecialenglish.com and on Facebook and Twitter at VOA Learning English. I’m Mario Ritter.

 

1 miscarriage   

n.失败，未达到预期的结果；流产

参考例句：

• The miscarriage of our plans was a great blow.计划的失败给我们以巨大的打击。
• Women who smoke are more to have a miscarriage.女性吸烟者更容易流产。

2 pregnancy   

n.怀孕，怀孕期

参考例句：

• Early pregnancy is often accompanied by nausea.怀孕早期常有恶心的现象。
• Smoking during pregnancy increases the risk of miscarriage.怀孕期吸烟会增加流产的危险。

3 pregnancies   

怀孕，妊娠( pregnancy的名词复数 )

参考例句：

• Since the wartime population needed replenishment, pregnancies were a good sign. 最后一桩倒不失为好现象，战时人口正该补充。
• She's had three pregnancies in four years. 她在四年中怀孕叁次。

4 miscarriages   

流产( miscarriage的名词复数 )

参考例句：

• Miscarriages are usually caused by abnormal chromosome patterns in the fetus. 流产通常是因为胎儿的染色体异常造成的。
• Criminals go unpunishedareconvicted and are miscarriages of justice. 罪犯会逍遥法外，法律会伤及无辜，审判不公时有发生。

5 chromosome   

n.染色体

参考例句：

• Chromosome material with exhibits of such behaviour is called heterochromatin.表现这种现象的染色体物质叫做异染色质。
• A segment of the chromosome may become lost,resulting in a deletion.染色体的一个片段可能会丢失，结果产生染色体的缺失。

6 encyclopedia   

n.百科全书

参考例句：

• The encyclopedia fell to the floor with a thud.那本百科全书砰的一声掉到地上。
• Geoff is a walking encyclopedia.He knows about everything.杰夫是个活百科全书，他什么都懂。

7 genes   

n.基因( gene的名词复数 )

参考例句：

• You have good genes from your parents, so you should live a long time. 你从父母那儿获得优良的基因，所以能够活得很长。 来自《简明英汉词典》
• Differences will help to reveal the functions of the genes. 它们间的差异将会帮助我们揭开基因多种功能。 来自英汉非文学 - 生命科学 - 生物技术的世纪

8 fetus   

n.胎，胎儿

参考例句：

• In the fetus,blood cells are formed in different sites at different ages.胎儿的血细胞在不同时期生成在不同的部位。
• No one knows why a fetus is not automatically rejected by the mother's immune system. 没有人知道为什么母亲的免疫系统不会自动排斥胎儿。

9 formerly   

adv.从前，以前

参考例句：

• We now enjoy these comforts of which formerly we had only heard.我们现在享受到了过去只是听说过的那些舒适条件。
• This boat was formerly used on the rivers of China.这船从前航行在中国内河里。

10 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。