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Study: C-Section Babies Face High Obesity Risk

研究顯示剖腹產的嬰兒可能面臨肥胖的威脅

  


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 英語宅急便     

研究顯示剖腹產的嬰兒可能面臨肥胖的威脅

Study: C-Section Babies Face High Obesity Risk

by Jessica Berman

WASHINGTON - A new study has found that babies born by Caesarean section are twice as likely to become obese by the age of three as newborns delivered vaginally, and authors of the report say women who plan to deliver their babies via C-section because it is more convenient might want to reconsider their options.

The study, conducted by researchers at Children's Hospital in Boston, monitored 1,250 women from before their 22nd week of pregnancy until they delivered their babies at hospitals in Massachusetts between 1999 and 2002.

Twenty-five percent of the babies were delivered by Caesarean section and the rest were born vaginally.

Height and weight of each baby was taken at three months of age and again at three years of age. Researchers found that by the third year, 16 percent of the C-section toddlers were obese, compared to 7.5 percent of those born vaginally. Differences in the children's birth weights did not appear to be a factor.

Researchers also found that three-year-olds born by C-section also had a higher skinfold thickness, a measurement of body fat. Although motherhood obesity is a known risk factor for overweight children, researchers said this finding was consistent regardless of the mother's weight.

According to Dr. Amos Grunebaum, director of obstetrics and chief of labor and delivery at the New York Weill Cornell Medical Center in New York City, it is important to tell mothers who do not need a C-section for medical reasons of the obesity findings and other risks associated with surgical delivery.

"We already know that if you do Caesarean-section, especially when there's no medical indication, there's an increased risk of babies being admitted to the intensive care unit for breathing issues," he said, adding that there are a number of legitimate reasons for a C-section, including babies who are positioned buttocks or feet first in the birth canal, and babies in distress or whose births are not progressing normally.

The Massachusetts researchers have speculated that obesity may be influenced by bacteria in a newborn's gut, which could be different in C-section babies than in vaginally-delivered babies. The microbes, they said, could affect how calories and nutrients are absorbed from food, promoting insulin resistance, inflammation and fat.

Another possibility, researchers said, is that hormones released during labor may influence the development of obesity, but that both possibilities need further study.

Grunebaum said he is likely to inform patients seeking an elective C-section of the additional risk of obesity.

"Whenever we do any procedure, we balance risks with benefits," he said. "And if risks outweigh benefits -- and in this case there are some risks such as obesity versus very little benefits -- then women should be aware of this."

A study on Caesarean section and the increased risk of childhood obesity is published in the journal Archives of Disease in Childhood.

 

I. Vocabulary Check-up

Fill in the blanks with one of the words or phrase from the word list above. After you finish, use mouse drag to select the text to reveal the hidden answer.

1. What the witness said in court was not_consistent _with the statement he made to the police

2. Six people were rescued by helicopter from a fishing boat_ in distress _off the Cornish coast.

3. He nearly died in the accident and was_ in the intensive care unit _for over a month.

4. Aspirin reduces pain and_ inflammation_.

5. He claimed that the restaurant bill was a_ legitimate _business expense.

6._ Toddlers _are tricky — they've grown enough to have their own ideas and wants, but their bodies and emotions haven't kept pace.

 

II. Reading Comprehension / True or False.

Fill in the blanks with T or F. After you finish, use mouse drag to select the text to reveal the hidden answer.

1. _(T)_ According to the study, babies born by Caesarean section are twice as likely to become obese by the age of three as newborns delivered vaginally.

2. _(F)_ According to the report, sixty-five percent of the babies were born vaginally at hospitals in Massachusetts between 1999 and 2002.

3. _(F)_ The study measured height and weight of each baby when they were just born and again a three years of their age.

4. _(F)_ Based on the study, children who weighted more in the birth weights are likely to be overweight in the future.

5. _(F)_ The research also saw the mother’s weight as a risk factor.

6. _(T)_ If there is no medical need to do C-section, there might be an increased risk of babies being admitted to the intensive care unit for breathing issues.

7. _(T)_ The situation that babies who are positioned feet first in the birth canal will be indicated for a C-section.

8. _(F)_ The researchers have confirmed that obesity will be influenced by bacteria in a newborn’s gut, which will be different in C-section babies than in vaginally-delivered babies.

 

Source:

http://www.voanews.com/content/study_says_c-section_babies_face_high_obesity_risk/1079303.html

 
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