Alcohol in breast milk is not linked to FASD. However, when a woman who is breastfeeding consumes alcohol, some of that alcohol does enter her breast milk. Research shows that alcohol in the milk can harm a child’s development, sleep, and learning. For this reason, breastfeeding women should be very cautious about consuming alcohol, if they choose to consume alcohol at all. According to the new 2010 Dietary Guidelines for Americans published by the USDA, a mother may consume a single alcoholic drink if she then waits a least 4 hours before breastfeeding.