A recent study of 50 breast-feeding mothers (2014-2017) shows that THC and CBD was present in mother’s milk in 63% of breast milk samples up to six days after maternal marijuana use.  

In one case of a mother who was a relatively heavier user, cannabis metabolites were found in the infant’s poop.

A few other studies have shown inconsistent effects of ingested cannabis on newborns.  Some showed no effect, one showed psychomotor deficits in over 50% of infants whose mothers took marijuana while breastfeeding.

While the data is still not yet definitive, the American Academy of Pediatrics (AAP) the American Congress of Obstetricians and Gynecologists (ACOG) have recommended that breastfeeding mothers refrain from use during this time in an infant’s life.

The purpose of this study was to determine the concentration of marijuana metabolites in breast milk based upon time of ingestion of marijuana. The researchers who performed this study intend to research the topic further with a focus on neurodevelopmental outcomes in infants with mothers who ingest cannabis.

You can access the full study article here:  http://pediatrics.aappublications.org/content/early/2018/08/23/peds.2018-1076

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