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Updated: Jun 13, 2026
03:19
Modifying Levels of Maternal Dietary Folic Acid or Choline to Study the Impact of Deficiencies on Offspring Health Outcomes
Published on: June 28, 2024
Maternal nutrition in pregnancy
Summary
Optimal pregnancy outcomes are supported by a 25 lb weight gain and 2,200 kcal daily. Prenatal vitamins show little benefit, but iron supplementation is recommended during the second and third trimesters.
Area of Science:
- Obstetrics and Gynecology
- Maternal-Fetal Medicine
- Nutritional Science
Background:
- Maternal nutrition significantly impacts pregnancy outcomes.
- Understanding specific nutritional needs during gestation is crucial for both maternal and fetal health.
- Evidence-based guidelines for prenatal nutrition are essential for clinical practice.
Purpose of the Study:
- To review current evidence on the nutritional requirements during pregnancy.
- To assess the impact of specific dietary interventions on pregnancy outcomes, including toxemia.
- To provide recommendations for supplementation during pregnancy.
Main Methods:
- Literature review of studies on pregnancy weight gain, caloric intake, and nutrient supplementation.
- Analysis of evidence regarding the efficacy of dietary salt restriction and diuretics for toxemia.
- Evaluation of data on iron and prenatal vitamin supplementation.
Main Results:
- A weight gain of approximately 25 lb is associated with optimal pregnancy outcomes.
- Average daily caloric need for pregnant individuals is 2,200 kcal.
- No significant evidence supports caloric restriction for toxemia prevention or treatment.
- Dietary salt restriction and diuretics have a minor role in toxemia management.
- Iron supplementation (30-60 mg/day) is recommended during the second and third trimesters.
- Prenatal vitamin supplements show limited evidence of positive effects on pregnancy outcomes.
Conclusions:
- Adequate weight gain and caloric intake are key for optimal pregnancy.
- Current evidence does not support routine caloric restriction or salt restriction for toxemia.
- Iron supplementation is a critical component of prenatal care in later trimesters.
- The routine use of prenatal vitamins lacks strong evidence for improving overall pregnancy outcomes.
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