Monday, 5 September 2011

Recommended Nutrient Requirement that increases During Pregnancy

Recommended Nutrient Requirement that increases During Pregnancy
Nutrients
Requirements
Food Source
Calories
Essential to supply energy for
-    increased metabolic rate
-    utilization of nutrients
-    protein sparing so it can be used for
-    Growth of fetus
-    Development of structures required for pregnancy including placenta, amniotic fluid, and tissue growth.
300 calories/day above the prepregnancy daily requirement to maintain ideal body weight and meet energy requirement to activity level
-    Begin increase in second trimester
-    Use weight – gain pattern as an indication of adequacy of calorie intake.
-    Failure to meet caloric requirements can lead to ketosis as fat and protein are used for energy; ketosis has been associated with fetal damage.


Caloric increase should reflect
-    Foods of high nutrient value such as protein, complex carbohydrates (whole grains, vegetables, fruits)
-    Variety of foods representing foods sources for the nutrients requiring during pregnancy
-    No more than 30% fat

Protein
Essential for:
-    Fetal tissue growth
-    Maternal tissue growth including uterus and breasts
-    Development of essential pregnancy structures
-    Formation of red blood cells and plasma proteins
* Inadequate protein intake has been associated with onset of pregnancy induces hypertension (PIH)
60 mg/day or an increase of 10% above daily requirements for age group

Adolescents have a higher protein requirement than mature women since adolescents must supply protein for their own growth as well as protein t meet the pregnancy requirement


Protein increase should reflect
-    Lean meat, poultry, fish
-    Eggs, cheese, milk
-    Dried beans, lentils, nuts
-    Whole grains
* vegetarians must take note of the amino acid content of CHON foods consumed to ensure ingestion of sufficient quantities of all amino acids
Calcium-Phosphorous
Essential for
-          Growth and development of fetal skeleton and tooth buds
-          Maintenance of mineralization of maternal bones and teeth
-          Current research is :
Demonstrating an association  between adequate calcium intake and the prevention of pregnancy induce hypertension

Calcium increases of
-    1200 mg/day representing an increase of 50% above prepregnancy daily requirement.
-    1600 mg/day is recommended for the adolescent. 10 mcg/day of vitamin D is required since it enhances absorption of both calcium and phosphorous
Calcium increases should reflect:
-    dairy products : milk, yogurt, ice cream, cheese, egg yolk
-    whole grains, tofu
-    green leafy vegetables
-    canned salmon & sardines w/ bones
-    Ca fortified foods such as orange juice
-    Vitamin D sources: fortified milk, margarine, egg yolk, butter, liver, seafood
Iron
Essential for
-    Expansion of blood volume and red blood cells formation
-    Establishment of fetal iron stores for first few months of life
30 mg/day representing a doubling of the pregnant daily requirement
-         Begin supplementation at 30- mg/day in second trimester, since diet alone is unable to meet pregnancy requirement
-         60 – 120 mg/day along with copper and zinc supplementation for women who have low hemoglobin values prior to pregnancy or who have iron deficiency anemia. 
-         70 mg/day of vitamin C which enhances iron absorption
-         inadequate iron intake results in maternal effects – anemia depletion of iron stores, decreased energy and appetite, cardiac stress especially labor and  birth
-         fetal effects decreased availability of oxygen thereby affecting fetal growth
* iron deficiency anemia is the most common nutritional disorder of pregnancy.
Iron increases should reflect
-          liver, red meat, fish, poultry, eggs
-          enriched, whole grain cereals and breads
-          dark green leafy vegetables, legumes
-          nuts, dried fruits
-          vitamin C sources: citrus fruits & juices, strawberries, cantaloupe, broccoli or cabbage, potatoes
-          iron from food sources is more readily absorbed when served with foods high in vit C

Zinc
Essential for
* the formation of enzymes
* maybe important in the prevention of congenital malformation of the fetus.
15mcg/day representing an increase of 3 mg/day over prepreganant daily requirements.
Zinc increases should reflect
-          liver, meats
-          shell fish
-          eggs, milk, cheese
-          whole grains, legumes, nuts
Folic Acid, Folacin, Folate
Essential for
-          formation of red blood cells and prevention of anemia
-          DNA synthesis and cell formation; may play a role in the prevention of neutral tube defects (spina bifida), abortion, abruption placenta
400 mcg/day representing an increase of more then 2 times the daily prepregnant requirement. 300mcg/day supplement for women with low folate levels or dietary deficiency
4 servings of grains/day
Increases should reflect
-          liver, kidney, lean beef, veal
-          dark green leafy vegetables, broccoli, legumes.
-          Whole grains, peanuts
Additional Requirements
Minerals
-          iodine
-          Magnesium
-          Selenium


175 mcg/day
320 mg/day
65 mcg/day
Increased requirements of pregnancy can easily be met with a balanced diet that meets the requirement for calories and includes food sources high in the other nutrients needed during pregnancy.
Vitamins
E
Thiamine
Riborlavin
Pyridoxine ( B6)
B12
Niacin

10 mg/day
1.5 mg/day
1.6 mg/day
2.2 mg/day
2.2 mg day
17 mg/day
Vit stored in body. Taking it not needed – fat soluble vitamins. Hard to excrete.

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