Thc And Breastfeeding Studies 2025. In breastfeeding individuals who smoke marijuana, how much tetrahydrocannabinol (thc) is excreted in breast milk and for how long? Other studies have noted even longer duration.
When breastfeeding mothers in a recent study used cannabis, its psychoactive component thc showed up in the milk they produced. In one study of 27 women who used cannabis daily during breastfeeding, no differences in growth, mental and motor development were noted in this study population.