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Author Spotlight: Studying the Impact of Maternal Dietary Deficiencies on Long-Term Offspring Health Outcomes
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Low Iodine Intake May Decrease Women's Fecundity: A Population-Based Cross-Sectional Study.

Mingluan Xing1, Simeng Gu1, Xiaofeng Wang1

  • 1Department of Environmental Health, Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou 310051, China.

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|September 28, 2021
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Summary
This summary is machine-generated.

Iodine deficiency in pregnant women is linked to longer time to pregnancy. Ensuring sufficient iodine intake is crucial for women's reproductive health and fetal development.

Keywords:
fecundability ratiofecundityiodine deficiencytime to pregnancy

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Area of Science:

  • Reproductive Health
  • Endocrinology
  • Public Health

Background:

  • Salt iodization is a key strategy for preventing iodine deficiency disorders (IDD).
  • Changes in China's salt market may reduce iodized salt access for pregnant women, risking IDD.
  • Iodine deficiency during pregnancy can negatively impact maternal and offspring health.

Purpose of the Study:

  • To investigate the association between iodine deficiency disorders (IDD) and women's reproductive health.
  • To explore the relationship between iodine intake and fecundity in pregnant women.

Main Methods:

  • Population-based cross-sectional study in Zhejiang Province, China (2018).
  • 1653 pregnant women participated.
  • Median urinary iodine concentration (UIC) assessed iodine intake; Cox regression analyzed time to pregnancy (fecundability ratio [FR], 95% confidence interval [CI]).

Main Results:

  • Pregnant women with iodine deficiency (median UIC 119.6 μg/L) had a higher incidence of taking over 13 months to conceive (20%) compared to iodine-sufficient women (14%, median UIC 147.1 μg/L).
  • Iodine deficiency was associated with a significant decrease in fecundity (FR, 0.820; 95% CI, 0.725-0.929).

Conclusions:

  • Iodine deficiency negatively impacts fecundity in pregnant women.
  • Continuous monitoring of iodine nutrition in women of reproductive age is essential.
  • Maintaining optimal iodine levels during pregnancy is critical for reproductive health.