DHA supplementation and pregnancy complications

Area of Science:

• Maternal-fetal medicine
• Nutritional science
• Neuroscience

Background:

• Docosahexaenoic acid (DHA) is crucial for fetal neurodevelopment and visual function.
• DHA supplementation during pregnancy is often recommended, but its role in preventing pregnancy complications is debated.
• The precise mechanisms of DHA's action in pregnancy require further elucidation.

Purpose of the Study:

• To review existing research on the association between maternal DHA intake and major pregnancy complications.
• To explore DHA's potential in predicting, preventing, and treating pregnancy-related conditions.
• To assess DHA's impact on offspring neurodevelopmental outcomes.

Main Methods:

• Systematic review of studies investigating DHA intake during pregnancy.
• Analysis of data concerning preeclampsia, gestational diabetes mellitus, preterm birth, intrauterine growth restriction, and postpartum depression.
• Evaluation of evidence on DHA's effects on fetal and neonatal neurodevelopment.

Main Results:

• Evidence for DHA's protective effect against pregnancy complications is limited and controversial, with notable exceptions for preterm birth and gestational diabetes mellitus.
• Maternal DHA supplementation shows potential benefits for long-term neurodevelopmental outcomes in offspring.
• The review highlights inconsistencies in current research regarding DHA's efficacy.

Conclusions:

• DHA supplementation during pregnancy has a controversial role in preventing common complications, though it may be beneficial for gestational diabetes and preterm birth.
• Further research is needed to clarify DHA's mechanisms and optimize its use in pregnancy.
• Maternal DHA intake appears to positively influence offspring neurodevelopment, particularly in cases of pregnancy complications.