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
accountant's resposibility
acrossed
adequate irrigation
amen curlers
an-fol R
angleworms
art-nouveaus
band loud speaker
battered wall
be past hope
bed stabilization
boat neck
boom out
carbon suboxide
carboxy
cardinal number of set
chapmanable
cloud ears
cold water tank
concatenation of languages
continuous density gradient
craniocentric
cross-lines cursor
cumulant
cw pumped repetitively q-switched lasers
cynophile
d'annunzio
easy-going
esthiomene
expellant,expellent
external equipment
F display
five days
fixed setting method
Frank-Read source
free electron method
genetic diathesis
global civil society
GPAIS
Great Lakes bulk carrier
grip jaw
half sheave
heater selector
hinged flap hatchcover
ionic detergent
late cretaceous
lay me down
light extinction method
lipophagy
lithogeochemistry
longrange forecast
Ludloff's sign
Luigi Cherubini
magnetic-pulse
manaos
marley's ghost
mistaken identity
momentum equation
Monterotondo Marittimo
multiple operator power source
MURA synchrotron
muscadel
Myrothecium
noise at the operator
one-sided scheme
pebbliest
petricolous
Phyllostachys angusta
political immigrants
postillism
Prendergast
product of linear functional
pyroelectric production
rail-riders
reader reply form or card
repacified
rule of four
salisbury
samaric carbonate
Santa Cruz, I.
scooter
Ship Types
skolochorate
slot of armature
sulfur cone
suspensibilities
tailing fill
telecel
tension compensation regulation
terrorist-financing
top elevator
ttq
turbine protection against water induction
tympanic cavity
valve breakdown
viernheim
wanli
wee quark
wet gluten
wodky
zte