Another reason I love Mothering Magazine, they are not afraid to report on some seriously controversial stuff. A friend of a friend (really!) had such severe morning sickness that she could not stop puking & the only thing that relieved it and gave her an appetite was the medicinal use of marijuana. I’ve met her kid and he rules. She & her mother both have a medical background and came to the conclusion that marijuana was safer than the prescription drugs that only half worked and had other serious side affects. So, since googling for an answer on this will lead you nowhere, check out this well researched article and decide for yourself:
Warnings that marijuana causes birth defects date back to the late 1960s.1 Some researchers claimed to have found chromosomal abnormalities in blood cells taken from marijuana users. They predicted that young men and women who used marijuana would produce deformed babies.2 Although later studies disproved this theory,3 some current drug education materials still claim that genetic damage is passed on by marijuana users to their children.4Today, researchers look for a direct effect of THC [for tetrahydrocannabinol, either of two physiologically active isomers, C21H30O2, from hemp plant resin] on the fetus. In animal studies, THC has been shown to produce spontaneous abortion, low birth weight, and physical deformities—but only with extremely large doses, only in some species of rodents, and only when THC is given at specific times during pregnancy.5 Because the effects of drugs on fetal development differ substantially across species,6 these studies have little or no relevance to humans. Studies with primates show little evidence of fetal harm from THC.7 In one study, researchers exposed chimpanzees to high doses of THC for up to 152 days and found no change in the sexual behavior, fertility, or health of their offspring.8
Read more: Use of Marijuana During Pregnancy | mothering.