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During pregnancy, a woman's mass increases by about 12 kg (26 lb). [39] The European Food Safety Authority recommends an increase of 300 mL per day compared to the normal intake for non-pregnant women, taking the total adequate water intake (from food and fluids) to 2,300 mL, or approximately 1,850 mL/ day from fluids alone. [40]
The common saying "a woman is eating for two" often leads to mothers thinking that they should eat twice as much. In reality, only a small increase in caloric intake is needed to provide for the fetus; approximately 350 calories more in the second trimester and 450 calories more in the third trimester. [3]
Pregnancy can cause major complications when trying to properly dose the nutrient mixture. Because all of the fetus' nourishment comes from the mother's blood stream, the doctor must properly calculate the dosage of nutrients to meet both recipients’ needs and have them in usable forms.
Micronutrient undernutrition results from insufficient intake of vitamins and minerals. [26] Worldwide, deficiencies in iodine, Vitamin A, and iron are the most common. Children and pregnant women in low-income countries are at especially high risk for micronutrient deficiencies. [26] [50]
Tolerable upper intake levels (UL), to caution against excessive intake of nutrients (like vitamin A and selenium) that can be harmful in large amounts. This is the highest level of sustained daily nutrient consumption that is considered to be safe for, and cause no side effects in, 97.5% of healthy individuals in each life stage and sex group.
AI for pregnancy is 30 μg/day. AI for lactation is 45 μg/day. AI for men is 35 μg/day for ages 14–50 and 30 μg/day for older. For infants to children ages 1–13 years, the AI increases with age from 0.2 to 25 μg/day. As for safety, the IOM sets Tolerable upper intake levels (ULs) for vitamins and minerals when evidence is sufficient. In ...
Inadequate intake of essential nutrients predisposes humans to various chronic diseases, with some 50% of American adults having one or more preventable disease. [3] In the United States, foods poor in micronutrient content and high in food energy make up some 27% of daily calorie intake. [3]
Micronutrient deficiency is defined as the sustained insufficient supply of vitamins and minerals needed for growth and development, as well as to maintain optimal health. Since some of these compounds are considered essentials (we need to obtain them from the diet), micronutrient deficiencies are often the result of an inadequate intake.