Pre
& Pregnancy
weight
The weight gain for a woman of healthy
body weight is recommended to be between 25-35 lbs. during the course of
pregnancy. Prior to pregnancy, all women should strive for appropriate body
weights. This is especially important for underweight women. An underweight
woman who fails to gain adequately during pregnancy is most likely to give birth
to a baby with dangerously low birthweight. Infant birthweight is the
single most potent indicator of a child's future nutrition and health status.
A low-birthweight baby is defined as one who weighs less than 5 1/2 pounds at
full-term. These victims of improper nutrition, and sometimes unavoidable health
concerns, are almost 40 times more likely to die in the first year of life than
is a normal-weight baby. Underweight women are therefore advised to not only see
to their nutrition needs of minerals, vitamins and all the other necessary
nutrients, but to consume extra amounts of them so as to gain weight in a
healthy manner. Nutritional deficiency, coupled with low birthweight,
is the underlying cause of more than half of all deaths worldwide of children
under five years of age. It is advisable for an underweight woman to
gain about 40 pounds during the course of her pregnancy. Teenage mothers seem to
be at greater risk for this condition than adult women, therefore any teen
pregnancy should be closely monitored. More information about this in a later
section.
Obese women too, are urged to attain
healthy weights before pregnancy. Under no conditions should a woman go on a
diet after she has learned she is pregnant. Doing so may dangerously reduce the
amount of nutrients fed to the growing embryo. The infant of an obese mother may
be larger than normal, and born late, or it may be large in size even if born
prematurely. In the latter case, the baby may not be recognized as premature and
may not receive the special care it requires from medical staff. Maternal
obesity also may double the risk for neural tube defects in the infant. Also,
obese pregnant women more often suffer gestational diabetes, hypertension, and
infections after the birth, than do women of healthy weight. The birth itself
may be more likely to require drugs, or surgical intervention to induce labor. A
good idea for obese women who may become pregnant is to consume adequate amounts
of essential nutrients from nutrient-dense foods and good-quality supplements,
without consuming excess fat. The goal is to attain a body weight just low
enough to lower the medical risks associated with obesity, before becoming
pregnant. Even for obese women, the minimum weight gain should be around
thirteen pounds during the pregnancy.
To eat well during pregnancy you must do more than simply increase how much
you eat. You must also consider what you eat. Although you need about 300
extra calories a day - especially later in your pregnancy,
when your baby grows quickly - those calories should come
from nutritious foods so they can contribute to your baby's growth and
development.
Why It's Important to Eat Well When You're
Pregnant
Do you wonder how it's reasonable to gain 25 to 35 pounds (on average) during
your pregnancy
when a newborn baby weighs only a fraction of that? Although it varies from
woman to woman, this is how those pounds may add up:
- 7.5 pounds - average baby's weight
- 2 pounds - breast enlargement
- 7 pounds - your body's extra stored protein, fat,
and other nutrients
- 1.5 pounds - the placenta
- 2 pounds - enlargement of your uterus
- 2 pounds - amniotic fluid surrounding your baby
- 4 pounds - your extra blood
- 4 pounds - your other extra body fluids
Weight Gain: Recommendations for the range of total weight gain and the
pattern of weight gain should be based on the prepregnancy weight for height.
The pattern of weight gain is as important as total weight gain during
pregnancy. Weight gain should be recorded on a chart that shows weight gain by
gestational age.
Prepregnancy
Weight |
Total Weight
Gain |
Rate of Gain
for 2nd & 3rd Trimesters |
Normal Weight |
25-35 pounds |
1 pound per week |
Underweight |
28-40 pounds |
more than 1
pound per week |
Overweight |
15-25 pounds |
2/3 pound per
week |
Twins |
30-35 pounds |
1 1/2 pound per
week |
Note: These are used as a guideline only... each woman and pregnancy is
unique and individualized. Nutritional counseling and assessment should be a
part of prenatal care and proper adequate nutrition is encouraged for optimal
health for the mother and her baby.
Disclaimer: This information is intended as a guide only. This information is offered to you with the
understanding that it not be interpreted as medical or professional advice. All
medical information needs to be carefully reviewed with your health care
provider.
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