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
a little while ago
acropora latistella
arid erosion
arylsulphotransferases
asself
available water supply
bacterioscopic
bench turret lathe
Bioxyphen
Blackwelderia
blepharolepis
boundary space
building cradle
carboprost
Christian anarchist
condurangoside
convergences
crankshaft key
crustal vertical deformation
cyanoacetanilide
dextro-rotator
effective speed
El Zapotal, R.
equisetum diffusum don
Euroyen loan
Evercrack
exsanguination transfusion
fabric-strip
family channels
family Mucoraceae
fast groove
fatas
free curve
fwd 5 seconds
greatful
Guerinit
Guignen
guisers
gutsful
haboob
hand pulley block
harkel transform
hippopotamus face
hull insurance
hyperpnea tests
Iliya
immunoelectrophoresis
impeller intake guide-vanes
in small
induperator
iodination reaction
isentropic hadley circulation
ivin
Jinning movement
joffres
lemar
leucopterins
Lostant
Lycianthes subtruncata
magnetization by electric current
mechanical drive rig
mediumorchid
misdetermine
mixed grain size
molasses solution mixer
nagant
natrual gas industry
no-load discharge of turbine
nonghostly
optimum control strategy
osmotic factor of solvent A
paramaladera kiyoyamai
personnel turnover
picnicky
pipette, pipetting
pluripotents
police reporter
powerboats
pre-Mohammedan
ptyalectasis
range station
rate follow-up unit
reciprocal centimetre
responsive phrase
sans-papiers
self-sticking
SIMDCG
skew-symmetric transformation
spinee
stoppenbach
sub-controlling unit
the West End
Tinmate
unidimensional magnification
uniflux condenser
unintellective
unless the policy otherwise provides
vasogenic edema
wash drawings
white crops
woodss
yossarian