As weed becomes legal in more states, studies are being conducted on its effects. The lates, by the University of California at San Diego shows marijuana can be detected in a mother's breast milk up to six days after use. Specifically, the compound THC is what stays in the body. A new study in the journal Pediatrics said it was similar for women who smoked pot or consumed an edible.
It's not clear what effect the chemicals in marijuana have on a developing child and researchers say more study is clearly needed. The World Health Organization recommends exclusive breastfeeding for up to six months.