Will smoking marajuana while nursing harm the baby if soo how?

Many ways: Cannabis is one of those drugs that produce problems for babies however they are exposed.It is transferred in breast milk & can produce sedation, weakness & poor feeding.It can drop milk production for mom. Long them head growth in baby is impaired but the effect on development is unknown. Smoking itself increases risk of crib death & frequency of infections. You give this up to be a mom.