Maternal characteristics influence response to DHA during pregnancy

Area of Science:

• Perinatal nutrition
• Maternal and child health
• Neurodevelopmental research

Background:

• Docosahexaenoic acid (DHA) is crucial for fetal development.
• Maternal DHA intake during pregnancy is linked to various offspring outcomes.
• Individual maternal characteristics may influence DHA's efficacy.

Purpose of the Study:

• To investigate how maternal characteristics modify the effects of prenatal DHA supplementation on maternal and offspring outcomes.
• To identify specific subgroups that may benefit most or least from DHA supplementation.

Main Methods:

• A clinical trial assessing prenatal DHA (800mg/day) versus a control.
• Analysis of maternal characteristics (e.g., smoking status, education level).
• Evaluation of offspring outcomes including birth weight, low birth weight incidence, cognitive, and language scores at 18 months.

Main Results:

• Among non-smokers, DHA supplementation led to significantly heavier babies (MD=99g) and reduced low birth weight incidence (RR=0.43).
• Children of mothers without further education showed enhanced cognitive scores (MD=3.15) at 18 months in the DHA group.
• Conversely, children of mothers with further education exhibited lower language scores (MD=-2.82) in the DHA group.

Conclusions:

• Maternal characteristics significantly influence the outcomes of prenatal DHA supplementation.
• The benefits of DHA on birth weight and cognition appear subgroup-dependent.
• Further research is warranted to tailor DHA supplementation strategies based on maternal profiles.