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J Toxicol. 2009;2009:596149. doi: 10.1155/2009/596149. Epub 2009 Apr 29.

Cannabis and breastfeeding.

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Départment d'Ingénierie Biologique, Ecole Polytechnique de l'Université de Nice - Sophia Antipolis, 1645 Route des Lucioles, 06410 Biot, France.


Cannabis is a drug derived from hemp plant, Cannabis sativa, used both as a recreational drug or as medicine. It is a widespread illegal substance, generally smoked for its hallucinogenic properties. Little is known about the adverse effects of postnatal cannabis exposure throw breastfeeding because of a lack of studies in lactating women. The active substance of cannabis is the delta 9 TetraHydroCannabinol (THC). Some studies conclude that it could decrease motor development of the child at one year of age. Therefore, cannabis use and abuse of other drugs like alcohol, tobacco, or cocaine must be contraindicated during breastfeeding. Mothers who use cannabis must stop breastfeeding, or ask for medical assistance to stop cannabis use in order to provide her baby with all the benefits of human milk.

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