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Open Access Impact of prophylactic iron supplementation in healthy pregnant women on maternal iron status and birth outcome

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Abstract:

Background. In spite of the beneficial effect of iron supplementation in iron-deficient pregnant women, iron supplementation may not be needed for women who are iron replete or not anemic. Moreover, the theoretical possibility of adverse effects, such as oxidative damage, from administration of iron supplements during pregnancy has been raised.

Objective. To determine the effect of prophylactic iron supplementation on iron status and birth outcomes among nonanemic pregnant women.

Methods. A randomized, triple-blind clinical trial was conducted. One hundred forty-eight nonanemic pregnant women with hemoglobin > 110 g/L, serum ferritin > 12 μg/L, and gestational age < 20 weeks were randomly assigned to receive either ferrous sulfate (60 mg elemental iron) (n = 70) or placebo (n = 78) until delivery. Hemoglobin concentration and serum ferritin were measured by electronic counter and radioimmunoassay, respectively. Data were analyzed by independent t-tests, ANCOVA, and repeated measures.

Results. At delivery, the incidence of iron deficiency was significantly lower in the iron than in the placebo group. There were no significant differences between the two groups in maternal hemoglobin and ferritin concentrations at delivery or in the infant's birthweight, birth length, or length of gestation.

Conclusions. Iron supplementation during pregnancy in nonanemic women with low serum ferritin may have benefits beyond the prevention of iron-deficiency anemia.

Keywords: IRON SUPPLEMENTATION; LOW BIRTHWEIGHT; NONANEMIC WOMEN; PREGNANCY

Document Type: Research Article

Publication date: September 1, 2011

More about this publication?
  • Established in 1978, the Food and Nutrition Bulletin (FNB) is a peer-reviewed journal published quarterly by the Nevin Scrimshaw International Nutrition Foundation.

    The focus of the journal is to highlight original scientific articles on nutrition research, policy analyses, and state-of-the-art summaries relating to multidisciplinary efforts to alleviate the problems of hunger and malnutrition in the developing world.

    Food and Nutrition Bulletin's 2012 Impact Factor: 2.106

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