what effects does marijuana have on a fetus
Related to Pregnancy. Marijuana May Harm Fetus. March 25, 2003 -- Smoking marijuana during pregnancy may cause lasting behavioral and mental defects in the child. A new study in animals suggests that children who are exposed to marijuana in the womb may suffer from a variety of long-term problems even if they aren't born with obvious birth defects.
Fetal growth may be further impaired by the tendency of marijuana to increase the heart rate and blood pressure28 of the mother, thus reducing placental blood flow to the fetus. In addition, cocaine and marijuana, when used together, may exert a synergistic effect on both heart rate and blood pressure.29.