Association between Preconception Dietary Fiber Intake and Preterm Birth: The Japan Environment and Children's Study

Takahiro Omoto1,2, Hyo Kyozuka1,2, Tsuyoshi Murata1,2

  • 1Fukushima Regional Center for the Japan Environmental and Children's Study, Fukushima 960-1295, Japan.

Nutrients
|March 13, 2024
PubMed

Insights

Higher preconception dietary fiber intake is linked to a lower risk of early preterm birth (before 34 weeks). This suggests dietary fiber may play a role in preventing premature births.

Area of Science:

  • Obstetrics and Gynecology
  • Nutritional Science
  • Public Health

Background:

  • Preterm birth (PTB) significantly contributes to infant mortality and morbidity.
  • Understanding modifiable risk factors like diet is crucial for PTB prevention.

Purpose of the Study:

  • To investigate the association between preconception dietary fiber intake and the incidence of preterm birth.
  • To analyze if higher fiber consumption before pregnancy impacts PTB risk.

Main Methods:

  • Prospective cohort study using data from 85,116 pregnancies in the Japan Environmental and Children's Study (JECS).
  • Participants were grouped into quintiles based on preconception dietary fiber intake.
  • Multiple logistic regression analysis was employed to assess the association with PTB.

Main Results:

  • Higher dietary fiber intake (Q3-Q5) was associated with a reduced risk of PTB before 34 weeks compared to the lowest intake group (Q1).
  • Specifically, Q3, Q4, and Q5 showed significantly lower adjusted odds ratios for PTB before 34 weeks.
  • No significant association was found between preconception dietary fiber intake and PTB before 37 weeks.

Conclusions:

  • Increased preconception dietary fiber intake is correlated with a decreased risk of preterm birth before 34 weeks gestation.
  • Dietary fiber may be a beneficial factor in preventing early preterm birth.
  • Consideration of dietary fiber recommendations in preconception care is warranted.

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