Iron in pregnancy: How do we secure an appropriate iron status in the mother and child?

Area of Science:

• Obstetrics and Gynecology
• Maternal-Fetal Medicine
• Nutritional Science

Background:

• Iron deficiency and iron deficiency anemia (IDA) in pregnancy pose risks for preterm birth, low birth weight, and impaired infant neurodevelopment.
• Increased iron requirements during pregnancy, particularly in the third trimester, often exceed dietary intake.
• A significant percentage of women enter pregnancy with inadequate iron stores, compromising fetal health.

Purpose of the Study:

• To highlight the importance of preventing iron deficiency in pregnant women to ensure optimal fetal iron status.
• To review current recommendations for iron supplementation during pregnancy.
• To advocate for individualized iron prophylaxis based on ferritin levels.

Main Methods:

• Review of existing literature on iron metabolism during pregnancy and the impact of deficiency.
• Analysis of dietary iron intake patterns in Scandinavian women.
• Evaluation of the efficacy of general versus individualized iron supplementation strategies.

Main Results:

• Over 90% of Scandinavian women have suboptimal dietary iron intake.
• Approximately 40% of non-pregnant women have low ferritin levels, indicating poor iron status for pregnancy.
• Only 15-20% of women achieve adequate iron reserves (≥500 mg) at conception.

Conclusions:

• Iron supplementation during pregnancy effectively reduces IDA prevalence.
• General low-dose iron prophylaxis is a strategy in Europe, but individualized prophylaxis is preferred in affluent societies.
• Specific ferritin-based guidelines for iron supplementation ensure adequate iron status throughout pregnancy.