Omega-3 Supplementation in Pregnancy: Effects on Child Development and Pregnancy Outcomes

Introduction

Omega-3 fatty acids, particularly DHA and EPA, are essential for brain and nervous system development. A recent systematic review and meta-analysis by Saei Ghare Naz et al. (2023), published in Health Science Reports, examines the effects of omega-3 supplementation in pregnant women on anthropometric measures of the child (e.g., birth weight, length) and pregnancy outcomes (e.g., preterm birth, preeclampsia). The results offer exciting insights that are also relevant in the context of Jürg Hösli's psychophysiological interaction model.

Key Findings of the Study

• Data Basis: Analysis of numerous randomized controlled trials on omega-3 supplementation during pregnancy.
• Results:
  • Positive effect on birth weight and length of the newborn, especially with DHA-rich supplements.
  • Reduction in the risk of preterm birth, particularly in women with low omega-3 status.
  • Potential protective function against preeclampsia, though with less conclusive data.
• Mechanisms: Omega-3 fatty acids promote cell membrane function, have anti-inflammatory effects, and support fetal neuronal development.

Connection to the Psychophysiological Interaction Model

In Jürg Hösli's psychophysiological interaction model, the interplay between psyche, body, and nutrition is central. Omega-3 fatty acids not only influence energy metabolism and cell health (physical level) but also stress regulation and the autonomic nervous system (psychological level). A balanced maternal omega-3 status could positively influence the sympathetic/parasympathetic balance, which in turn stabilizes pregnancy progression and reduces stress responses (e.g., via the cortisol axis). Furthermore, the study suggests that nutrition as a preventive intervention – a core theme of Hösli's work – can provide crucial impulses for a child's health even before birth.

Practical Relevance: What does this mean for everyday life?

The results show that omega-3 supplementation can be used targetedly, especially in women at increased risk of preterm birth or with low omega-3 status. Concrete recommendations for action:

• Adjust diet: Integrate omega-3-rich foods such as fatty fish (e.g., salmon, mackerel) or chia seeds into the diet. Pregnant women should pay attention to quality-tested food supplements to avoid contaminants.
• Individual needs analysis: A discussion with a nutritionist or doctor can clarify whether a supplement is necessary – fitting Hösli's approach of individualized nutrition ("not just what, but for whom").
• Consider stress management: Since omega-3 fatty acids affect stress response m