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At few other points in a woman's life is she as acutely aware of the impact
of what she eats, as when she is pregnant. Proper nutrition is absolutely
critical to the health and well being of the unborn child.
While your body is changing outwardly, it is
also undergoing some profound changes physiologically. The foods you eat,
the way they are used, and their effects on your body and your baby play an
important role in these changes. Remember to feed yourself well and you will
give your baby the best possible start.
Disclaimer: Some women have unique medical and
health issues that will impact their nutritional status. The following
information is not intended to replace proper care from a licensed physician
and any medical concerns you have should be addressed by your GP. If you are
concerned about your diet than a consultation with our Nutritionist will be
beneficial in understanding the special needs your body has during
pregnancy.
The Following table outlines the most
common nutrition questions regarding pregnancy.
Increased Calorie Consumption: Eating for two? Think Again!
We often hear the expression - eating for two in reference to pregnant
women. In fact, pregnant women require only an additional 300 kcal
(calories) per day in the second and third trimesters. There is no
additional requirement for energy (calories) in the first trimester. These
300 kcal are needed to support the rapid growth of the fetus and are in
addition to the approximately 2000 kcal most pre-pregnant women should
consume, bringing the total daily caloric consumption to 2300 kcal. This
extra 300 kcal is approximately the same amount of energy supplied by a bowl
of cereal with low-fat milk or a tuna fish sandwich. Women who are very
physically active and engage in exercise may need to consume more energy
based
on
their activity level and lifestyle.
300 extra kcal could be:
-
2
toasted crumpets with a teaspoon of peanut butter
-
a
bagel filled with low fat soft cheese
-
a
large bowl of fruit salad topped with a pot of low fat yoghurt
-
a
wholemeal sandwich with lean ham, chicken salad or low fat tuna mayonnaise
-
a
bowl of wholegrain cereal with a small chopped banana and low fat milk
Weight Gain
A healthy birth weight baby is the result of proper nutrition and adequate
maternal weight gain. Recommendations for women who enter pregnancy at or
around their ideal weight are 10-12 kilograms (22-28 pounds). Women who
enter pregnancy below their ideal weight may be advised by their GP to gain
more; women who are overweight prior to pregnancy may be advised to gain
less. However, it is not advisable-nor is it healthy for the developing
fetus to begin a weight-loss diet regime during pregnancy.
Special
Nutrients During Pregnancy
Your body and your baby require more of almost everything when you are
pregnant. Optimal growth of the baby depends on the mother accumulating
extra body stores during pregnancy. This means that pregnancy is not the
time to diet, to hold back on important nutrients or to worry about weight
gain. Yet before you take this as a license to eat five chocolate bars a
day, remember that the QUALITY of your food also impacts baby's health.
The picture below of the Balance of Good Health shows the proportion and
types of foods that are needed to make up a healthy balanced diet. This
guide applies to most people including pregnant and lactating women.

© Food
Standard Agency
The guide is divided into five food groups: bread, other cereals and
potatoes; fruit and vegetables; milk and dairy foods; meat, fish and
alternatives; foods containing fat and foods containing sugar. Aim to choose
a variety of foods from the four largest groups every day to ensure that you
obtain the wide range of nutrients. More foods should be eaten from the
bread, other cereals and potatoes group and the fruit and vegetables group
compared with the milk and dairy foods group and the meat, fish and
alternatives group. Foods in the smallest group - foods containing fat and
foods containing sugar - add choice and palatability but foods from this
group should either be used sparingly if they are eaten every day (such as
butter and spreads) or not eaten too often (such as sweets and crisps).
The key message from the Balance of Good Health is that having a balance and
variety of foods in the diet is important for health. Aiming to achieve this
balance every day is a sensible and practical approach, although it is not
necessary to achieve it at every meal. Choosing different foods from within
each group is also important as this adds to the range of nutrients
consumed, as well as variety to the diet.
Proteins & Fats
When you are pregnant, your body metabolizes macronutrients (carbohydrates,
proteins and fats) quite differently than it did before pregnancy. Pregnant
women require more protein to support fetal growth, and fat is stored more
readily because it is used as a fuel source during pregnancy and lactation.
The recommendation for protein increases to 60 grams per day (from 50 grams
per day for a non-pregnant woman 25-50 years old) Good protein sources
include dairy products; lean meats, fish; legumes and tofu.
Currently there are no recommendations for increased fat consumption during
pregnancy because our society has no shortage of fatty foods and in general
women consume adequate fat when they increase their overall caloric intake.
However, avoid trans fats, which are found in foods that contain
hydrogenated vegetable oils (often the label reads hydrogenated soybean oil,
vegetable shortening, hydrogenated palm kernel oil, etc). Many snack foods,
processed foods (crackers, pastries, candies) and the oil used in
deep-frying fast foods contain hydrogenated oils.
Vitamins & Minerals
The requirements for many vitamins and minerals increase during pregnancy.
The following are some of the most important.
Folic Acid:
Folate is a key vitamin in the development of the fetus and maternal folate
status is recognised as being important in the avoidance of neural tube
defects, e.g. spina bifida. For this reason it is recommended that all women
of child bearing age take a supplement of 400 micrograms of folic acid per
day (folic acid is the synthetic form of the vitamin folate). In particular,
this supplement should be taken before conception and continued until week
12 of pregnancy. A larger supplement (4 mg/day) is recommended for women who
have already had an NTD pregnancy, to help prevent recurrence. In addition,
it is recommended that all women of child bearing age eat more folate-rich
foods. Folate is found in green leafy vegetables, orange fruits,
strawberries, broccoli, cantaloupe, asparagus, cooked dried peas, beans,
wheat germ and fortified cereals and breads.
If you are of child-bearing age and considering becoming pregnant, it is
advisable to take this prenatal supplement because neural tube defects occur
in the very early weeks post-conception, a period when most women have no
idea they are pregnant.
Calcium:
As vital as it is to your bones, it is equally critical to the bone and
teeth development of your baby. The recommended intake for calcium is 700
mg/day. This can be obtained through three or more servings of calcium-rich
dairy products: low-fat milk, cheese or yogurt. A small number of women are
intolerant to lactose (the carbohydrate found in dairy products). Some
people with lactose intolerance are better able to tolerate hard cheese and
yogurt, than milk and so should include these foods in their diet along with
calcium-fortified soy or rice milk, calcium-fortified tofu (soybean curd)
and calcium-fortified orange juice. Legumes, nuts, dried fruits and dark
leafy green vegetables such as cabbage, kale, collards and turnip greens
also are high in calcium. However some of the calcium in spinach, chard and
beet greens is bound with oxalic acid which makes the calcium unavailable to
the body.
Iron:
Another mineral needed both by mother and baby as it is a critical component
of your blood. Many women find themselves deficient in iron during pregnancy
which can lead to iron-deficiency anaemia. Iron is needed for the production
of new blood cells (your blood volume increases 50% during pregnancy) and
many women do not have sufficient iron stores. The last trimester is the
time of the highest iron utilization by the fetus. Iron is best absorbed
from red meats, however, other iron-rich foods include bread and cereal
products, breakfast cereals, green leafy vegetables, eggs, beans such as
baked beans, lentils and dried fruits. Vitamin C aids in iron absorption
from non-meat sources of iron, so try to consume vitamin C-rich foods with
iron-rich foods at the same meal. Most physicians will test for iron
deficiency at some point during your pregnancy and if needed will recommend
a supplement.
*Vitamin
A:
An important nutrient essential because of its role in the immune system,
reproduction and vision. However, the recommended dietary allowance does not
increase during pregnancy. In fact mega-doses of vitamin A (retinol) has
been linked to birth defects. The recommendation for pregnant women is 800
RE (retinal equivalent). The risk for birth defects due to vitamin A
supplementation is highest in the first trimester. It is not advisable to
take a vitamin A supplement in addition to the prenatal vitamins. In
addition, limit your consumption of foods with a high concentration of
vitamin A, specifically liver and pate made from liver.
The following table shows the UK Recommended Dietary Amounts (RDA) for
females and lactating mothers.
|
|
Females
Age
19-24 |
Females
Age
25-50 |
Pregnant
Women |
Lactating
Women,
0-6 Months |
Lactating
Women
6 Months + |
|
Protein |
45g |
45g |
+6g |
+11g |
+8g |
|
Vitamin A |
600mcg |
600mcg |
+100mcg |
+350mcg |
+350mcg |
|
Vitamin D |
-- |
-- |
+10mcg |
+10mcg |
+10mcg |
|
Vitamin C |
60mg |
60mg |
70mg |
95mg |
90mg |
|
Thiamine |
0.8mg |
0.8mg |
+0.1mg |
+0.2mg |
+0.2mg |
|
Riboflavin |
1.1mg |
1.1mg |
+0.3mg |
+0.5mg |
+0.5mg |
|
Niacin |
13mg |
13mg |
No
increment |
+2mg |
+2mg |
|
Vitamin B6 |
1.2mg |
1.2mg |
No
increment |
No
increment |
No
increment |
|
Folate |
200mg |
200mg |
+100mg |
+60mg |
+60mg |
|
Vitamin B12 |
1.5mg |
1.5mg |
No
increment |
+0.5mg |
+0.5mg |
|
Calcium |
700mg |
700mg |
No
increment |
+550mg |
+550mg |
|
Phosphorus |
550mg |
550mg |
No
increment |
+440mg |
+440mg |
|
Magnesium |
270mg |
270mg |
No
increment |
+50mg |
+50mg |
|
Iron |
15mg |
15mg |
No
increment |
No
increment |
No
increment |
|
Zinc |
7mg |
7mg |
No
increment |
+6mg |
+6mg |
|
Iodine |
140mcg |
140mcg |
No
increment |
No
increment |
No
increment |
|
Selenium |
60mcg |
60mcg |
No
increment |
+15mcg |
+15mcg |
|
g = grams, mcg = micrograms, mg = milligrams |
Food Cravings and Aversions
The following is an excerpt from our resident
nutritionist:
'During pregnancy many of the beliefs about food that we once held dear, can
be challenged. I was a staunch vegetarian prior to my first pregnancy, yet
after 13 weeks of queasiness and food aversions, I suddenly found myself
craving grilled chicken. As many of you already know, little can stand in
the way of a pregnant woman s craving. Principles or no principles, my
vegetarianism flew out the window in my daily quest for grilled chicken.
Worse yet, with my second pregnancy I would occasionally (and at odd times
of day and night) crave the one thing I thought would never touch my adult
lips: fast food hamburgers. Ironically my food aversions were what was once
the basis of my vegetarian diet: lettuce and other cooked vegetables.
The good thing about pregnancy cravings and aversions is they are
short-lived and do not carry over into the rest of our non-pregnant lives. I
came to believe that my cravings had some basis in physiology and my body
was telling me what it needed (iron most likely, and some protein!). However
while it is hard to deny a craving, try to remember that what your
hormone-ravaged body may think it wants, is not necessarily best for baby's
growth. Cookies and pastries, high-fat junk food and other non-nutritive
foods will displace important, whole foods like fruits and vegetable. Not
only will you be denying your baby proper nutrition, you will also end up
consuming more calories than you need.
If you are craving a sweet, try instead a healthy muffin with jelly, or a
piece of toast with honey. If you are craving cookies, bake some yourself
and add whole-wheat
flour and/or wheat germ to the mix and reduce the sugar by ¼ to ½ of what
the recipe calls for. If you absolutely must have something you know isn't
ideally healthy, try to limit how many times you consume it or the overall
amount you eat. Give yourself just one scoop of ice cream instead of three!
This is one of the only times in your life when you will have complete
control over what your child eats, so try to feed it well!'
Nausea and Morning Sickness
It can be very challenging to eat properly when
you are feeling queasy or are having trouble keeping food down. The best way
to deal with mild morning sickness is to be sure to consume a small snack
first thing in the morning, or even before you get out of bed (keep a box of
whole grain crackers by the bedside table) and to sip water or decaffeinated
tea throughout the day. Continue with small bites of crackers or whatever
else you can manage. While it seems counterintuitive, eating small amounts
throughout the day can help with the nausea. Most women either have nausea
first thing in the morning, or in the early evening. Many women have a
queasy feeling throughout the day but can eat some foods without ill
effects. If you are not able to hold any foods down it is important to
discuss this with your physician. Usually these symptoms subside by the
second trimester.
Lactation
Much of the fat that your body accumulated
during pregnancy is intended as stores for lactation. Proper nutrition for
nursing mothers is essential. Your food choices are not directly impacting
your baby quite to the extent as they did during pregnancy. Yet what you eat
will impact the nutritional profile of your breast milk and will certainly
impact your physical well-being and energy levels. In fact, your body uses
more energy producing milk for your baby than it does making the baby!
The energy needs of women vary based on how much milk they are producing.
The daily volume of breast milk consumed by a baby can range from 340 to
1,000 milliliters per day. The average is between 600 and 900 ml per day.
Making this milk requires increased calories, protein, vitamins and
minerals.
Although maternal diet has virtually no effect on the protein, total fat and
energy composition of breast milk, the fatty acid composition (the types of
fat eaten) of a woman's diet will influence the fatty acid profile (the
amounts and types of fat present) of her milk. This is important, especially
with regard to the amount of essential fatty acids present as they are
needed for brain development. In particular the long chain omega-3 fatty
acids found in oily fish are known to be important so it is a good idea to
include oily fish in the diet, such as herring, trout, mackerel, salmon,
sardines. There is no special recommendation for the consumption of oily
fish for pregnant or breast-feeding women. Current advice for everyone is to
eat at least two portions of fish per week, one of which should be oily.
You will need to consume 500 kcal more per day than you did prior to
becoming pregnant. However, remember that these extra calories should come
from healthy foods: fruits and vegetables; lean meats and poultry; fish; low
fat dairy and whole grains.
Protein needs increase from 45 grams per day during pregnancy to 56 grams
per day during the first 6 months of your baby's life. Protein is found in
meat, fish, poultry, eggs, milk and soybeans. One glass of milk provides 8
grams of protein. One egg provides 7 grams of protein. After the first 6
months you should consume 53 grams of protein per day.
Your iron needs do not change from 14.8 mg per day during lactation, but
eating iron-rich food (combined with vitamin C) remains important and your
calcium needs increase to 1,250 mg per day. Include plenty of calcium-rich
dairy foods every day.
Important
Advice For Pregnant Women -- Foods to Avoid
Avoid eating raw eggs and food containing raw or partially cooked eggs. Only
eat eggs cooked enough for both the white and yolk to be solid. This is to
avoid the risk of salmonella, a type of food poisoning. Always wash your
hands after handling raw meat, and store raw foods separately from other
foods. This is to avoid other types of food poisoning from meat (salmonella,
campylobacter and E. coli O157).
Avoid the following foods because they can contain high levels of listeria,
bacteria that can cause miscarriage, stillbirth or severe illness in a
newborn baby:
-
Soft mould-ripened cheese, such as Camembert, Brie and blue-veined cheese.
There is no risk of listeria with hard cheeses (such as Cheddar), cottage
cheese and processed cheese
-
Pâté (any type, including vegetable)
-
Uncooked or undercooked ready-prepared meals. Make sure you heat
ready-prepared meals until they're piping hot all the way through
Only eat meat that has been well cooked. Take particular care with sausages
and minced meat. Always wear gloves when you're gardening or changing cat
litter and wash your hands afterwards. This is to avoid toxoplasmosis, an
infection caused by a parasite found in meat, cat faeces and soil. The
infection can be harmful to unborn babies.
Avoid eating shark, swordfish and marlin and limit the amount of tuna you
eat. You shouldn't eat more than one tuna steak a week (weighing about 140g
cooked or 170g raw) or two medium-size cans of tuna a week (with a drained
weight of about 140g per can). For canned tuna, this means about six rounds
of tuna
sandwiches or three tuna salads. These fish contain high levels of mercury
which is harmful to your baby s neurological development and is also harmful
to adults.
Caffeine
Limit the amount of caffeine you have each day.
Caffeine occurs naturally in a range of foods, such as coffee, tea and
chocolate, and it's also added to some soft drinks and 'energy' drinks.
Do not consume more than 300 mg of caffeine a day. This is because high
levels of caffeine can result in babies having a low birth weight, or even
miscarriage.
Each of these contains roughly 300 mg of caffeine:
3 mugs of instant coffee (100 mg each)
4 cups of instant coffee (75 mg each)
3 cups of brewed coffee (100 mg each)
6 cups of tea (50 mg each)
8 cans of cola (up to 40 mg each)
4 cans of 'energy' drink (up to 80 mg each)
8 (50 g) bars of chocolate (up to 50 mg each)
If you eat a bar of chocolate and drink 3 cups
of tea, a can of cola and a cup of instant coffee in a day, you'll have
reached your 300 mg limit.
Remember that caffeine is also found in certain cold and flu remedies, so
always check with your GP or another health professional before taking any
of these.
Alcohol
Current advice for alcohol consumption during pregnancy is to avoid drinking
more than 1 or 2 units of alcohol, once or twice a week.
A unit is half a pint of standard strength beer, lager or cider, or a pub
measure of spirit. A glass of wine is about 2 units and alcopops are about
1.5 units.
Peanuts
Pregnant women who are atopic (suffer from any sort of allergy) or whose
husband or sibling of the unborn child has an atopic disease may wish to
avoid peanuts and peanut products during pregnancy. The same advice applies
during lactation. This does not guarantee the absence of peanut allergy in
the unborn child, as to date the evidence of a relationship is inconclusive.
This advice does not apply in the absence of atopy.
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