时间:2019-01-04 作者:英语课 分类:健康与环境


英语课

HEALTH REPORT - October 23, 2002: Folic Acid Reduces Fetal Deaths


By Nancy Steinbach



This is the VOA Special English Health Report.


A new study in Sweden has confirmed another important health effect of the B-vitamin known
as folic acid.


Researchers at the United States National Institute of Child Health and Human Development
worked with scientists at the Karolinska Institute in Stockholm, Sweden. They reported their
findings in the Journal of the American Medical Association.


The researchers were looking for a possible link between folic acid and fetal death in the early
months of pregnancy 1. The study involved more than one-thousand-three-hundred pregnant
women in Uppsala County, Sweden. The researchers measured the amount of folic acid in their
blood during the sixth and twelfth weeks of pregnancy.


Four-hundred-sixty-eight of the women had miscarriages 2. Their babies died between six and twelve weeks of
pregnancy. Nine-hundred-twelve other women had normal pregnancies 3.


The researchers found that the women with low levels of folic acid had a fifty percent increased risk of losing
their babies early in pregnancy. Extremely high levels of folic acid were found to have no effects on the
pregnancies.


The researchers say that every woman between the ages of fifteen and forty-four should be getting four-hundred
micrograms of folic acid every day. Earlier studies have shown that having enough folic acid in the early months
of pregnancy can reduce the risk of having a baby born with a serious birth defect of the brain or spine 4. Experts
say women need to have enough folic acid even before they become pregnant.


Doctors say women of child-bearing age are not the only ones who need folic acid. The vitamin has been shown
to protect against heart disease and stroke in older people as well. And some studies are suggesting that folic acid
may reduce the chances of developing some kinds of cancer and Alzheimer’s disease.


The human body cannot make folic acid. It must get the vitamin from foods. Foods rich in folic acid include
beans, green leafy vegetables, liver, eggs and fruits such as oranges and grapefruits. Medical experts say that
women who are not sure they are getting enough folic acid from their food should take a vitamin pill every day.


This VOA Special English Health Report was written by Nancy Steinbach.



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n.怀孕,怀孕期
  • 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。
流产( miscarriage的名词复数 )
  • 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。
怀孕,妊娠( pregnancy的名词复数 )
  • 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。
n.脊柱,脊椎;(动植物的)刺;书脊
  • He broke his spine in a fall from a horse.他从马上跌下摔断了脊梁骨。
  • His spine developed a slight curve.他的脊柱有点弯曲。
学英语单词
additive color mixture
Antioch University
ardvrecks
Badzhal
be on other side of the fence
besteman
betamimetics
blood flour
body-blow
buying by inspection
Capestrano
cases-to-infection ratio
Chappell
checkpoint restart
condenser microphones
condenser-diffuser type enlarger
control of scrap
cultivator-planting combine
custody of assets
dbp (data base processing)
debye-sommerfeld equation
decorative illumination
diaphragm carrier ring
difficulting
dragon roll
dysbasia angiosclerotica
electrical impulse
escalator drive
fieldbook
flame absorption
free-falling velocity
helm (cloud)
hippodamous
Homa Bay
honesttogoodness
hydraulic hobbing press
hylea
Imicillin
immigrate
Incisura pancreatis
INPADOC Data Base
israel folk dance institute (ifdl)
justifyingly
kuos
lactonase
Lesnoy Rayon
light soup
lightweight data access protocol
lung butter
Macroptilium
Management of Aids to Navigation
Marie Jeanne
Mies van der Rohe, Ludwig
million theoretical operations per second
molybdenites
nigh by
nucleolar organiser
Ominipaque
opaque fluid
out of shape
outboard drive unit
panarthritis
phyllobranchia
plasce
possessory things
processioning
race-acetylmethadol
Rautalampi
recharge rate
renders
return opening
Rullbo
sapphirina gastrica
scillitic
Scrophulariales
seek advice
semi-permanents
silklike
Single European Market
skiddooed
solid state modulator
south tmeperature zone
speaking skills
spot investigation
spread oneself
suin
sulphonimide
suprapermafrost water
ternan
throw in one's hand
thyrotoxin
toxicodendrons
transient echo
tremblingly
tsen
tuyere ratio
two point problem
vestibulograph
Virgin Islands
WCCK
weijing decoction
wolf's-claw