Alcohol in Early Pregnancy: Risks to the Developing Baby
No amount of alcohol is proven safe during pregnancy. Alcohol crosses the placenta freely; the fetal liver cannot metabolize it effectively.
Fetal Alcohol Spectrum Disorders (FASD)
- Fetal Alcohol Syndrome (FAS): Growth restriction, characteristic facial features (smooth philtrum, thin vermillion border, short palpebral fissures), CNS abnormalities.
- Partial FAS / Alcohol‑Related Neurodevelopmental Disorder (ARND): Neurocognitive/behavioral deficits without full facial phenotype.
- Alcohol‑Related Birth Defects (ARBD): Cardiac, renal, skeletal, auditory/visual anomalies.
Dose‑Response & Timing
Risk increases with quantity, frequency, and binge pattern. Critical periods: organogenesis (weeks 3‑8) for structural defects; all trimesters for brain development.
Recommendation
- Abstain from conception onward.
- If pregnancy unplanned and alcohol consumed early, stop immediately and inform provider.
- Screening (AUDIT‑C) and brief intervention in prenatal care.
FASD is 100% preventable.
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