We already know thatexpecting mothersshould never drink alcohol, especially in the first three months ofpregnancy.
The effects of marijuana on fetuses and newborns, however, are not as well known.
Scientists also found that THC crosses the placenta in the study volunteers.
According to the ACOG, marijuana may disrupt the brain development of the fetus.
It can also increase the risk of stillbirth and the chance of going into labor too early.
In young children, secondhand marijuana smoke may even cause behavioral problems and trouble staying focused in school.
