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Related Experiment Videos

Second trimester folate status and preterm birth.

Anna Maria Siega-Riz1, David A Savitz, Steven H Zeisel

  • 1Carolina Population Center, CB # 8120 University Square, University of North Carolina at Chapel Hill, Chapel Hill, NC 27516-3997, USA. am_siegariz@unc.edu

American Journal of Obstetrics and Gynecology
|December 14, 2004
PubMed
Summary

Maternal folate status during pregnancy is linked to preterm birth risk. Low folate levels in the second trimester increase the likelihood of delivering a baby prematurely.

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Area of Science:

  • Nutritional Epidemiology
  • Maternal-Fetal Medicine
  • Public Health

Background:

  • Folate is crucial for fetal development and maternal health during pregnancy.
  • Preterm birth remains a significant concern in maternal and child health globally.
  • Understanding nutritional impacts on pregnancy outcomes is vital for preventative strategies.

Purpose of the Study:

  • To investigate the association between maternal folate status and the risk of preterm birth.
  • To determine if dietary folate intake or serum/red blood cell folate levels correlate with preterm delivery.

Main Methods:

  • Prospective cohort study (Pregnancy, Infection, and Nutrition Study) involving 2026 women.
  • Data collected via interviews, food frequency questionnaires, and serum/red blood cell folate radioassays.

Related Experiment Videos

  • Analysis controlled for total energy intake to assess folate's independent effect.

    • Main Results:

    • Mean daily dietary folate intake was 463 mcg.
    • Dietary intake ≤500 mcg/day was associated with an 80% increased risk of preterm delivery (RR=1.8).
    • Low serum folate (<16.3 ng/mL) and red blood cell folate (≤626.6 ng/mL) also showed increased preterm birth risk (RR=1.8 and 1.7, respectively).

    Conclusions:

    • Low maternal folate levels in the second trimester are significantly associated with an elevated risk of preterm birth.
    • Findings support the importance of adequate folate status for a healthy pregnancy duration.
    • These results highlight potential targets for interventions to reduce preterm birth rates.