Smoking marijuana while breast-feeding may pose risk to infants.
A small study of breast-feeding mothers suggests that the breast-fed infants would consume about 2.5% of the inhaled cannabis dose. Well-intentioned parents might choose to smoke marijuana away from their infants to minimize exposure, but thus study indicates the breast-fed infants will still ingest some. While these amounts are small, the impact on the developing brain is unknown.
PositiveTip: The safest practice is for breast-feeding mothers to refrain from using any cannabis.