Preconception dietary patterns in human pregnancies are associated with preterm delivery

Area of Science:

• Reproductive Health
• Nutritional Science
• Perinatal Epidemiology

Background:

• Maternal nutrition significantly influences fetal development and birth weight.
• Preconception dietary habits' impact on perinatal outcomes remains under-researched.
• Understanding periconceptional nutrition is crucial for optimizing pregnancy health.

Purpose of the Study:

• To investigate associations between maternal dietary patterns 12 months pre-conception and fetal growth.
• To identify links between preconception diet and preterm delivery risk.
• To evaluate the relationship between maternal diet and infant birth measurements.

Main Methods:

• Retrospective collection of food frequency data from 309 women.
• Factor analysis to identify distinct maternal dietary patterns.
• Analysis of perinatal outcomes including birth weight percentiles and preterm delivery (<37 weeks gestation).

Main Results:

• Three dietary patterns identified: high-protein/fruit, high-fat/sugar/takeaway, and vegetarian-type.
• High-protein/fruit pattern associated with decreased preterm birth likelihood (aOR: 0.31).
• High-fat/sugar/takeaway pattern linked to increased preterm birth risk (aOR: 1.54), shorter gestation, and reduced birth length.

Conclusions:

• Maternal nutrition in the periconceptional period is significantly associated with perinatal outcomes.
• A preconception diet rich in protein, fruit, and whole grains may reduce preterm delivery.
• Adopting healthier dietary patterns before pregnancy can improve infant health and long-term outcomes.