Oh, lord. "Drugged" babies? Really? So, putting all the knee-jerk over-reactions to it's use aside. First off, it's not a "drug", it's an herb, with great medicinal benefits. In the Rastafarian community, it is considered a sacrament, and almost essential for worship. Now why I consider it a good study is, unlike the few N. American studies, Rastafarian women who use ganja do not use cigarettes, alcohol, or other recreational substances. What I infered from this study is that ganja use is not quite as scary and detrimental as The Powers That Be would like us to believe. Now, coming from this particular culture, Rastafarians tend to belong to the lowest socio-economic sector of Jamaican society, due to their philisophical beliefs about participating in the capitalistic Babylon system and ostracism from the very Christian mainstream society.
Compared to Zofran for morning sickness, for example, it is much safer and will have few if any side effects. Compare it to the effects of hyper-emesis and starvation, for that matter. Compare it to Nubain or Stadol for labour analgesia, you won't see any baby needing Narcan after his mama took a tea with ganja tincture. There is no evidence that it causes any harmful effects in the human fetus if used during pregnancy. I have never seen any of the alleged effects in a newborn of a mother who uses ganja, and only ganja; small placenta, small head circumference, low birth weight, tremors, etc. I have never seen the infant of a mother who uses ganja, and only ganja, neglected or abused.
As I said, I come from a culture where practically every home has a jar of tincture and practically all of us have had ganja medicine given to us during an illness. I was also raised in a Rastafarian home where ganja was used daily. (personally, I don't smoke it and haven't since I was 16, which is a looooong time ago) I kind of take offense to the idea that we are a drugged culture raising drugged, neglected, developmentally delayed babies.
Working in a very large West Indian immigrant community, I do take care of Rastafarian women who do consider ganja a sacrament and who will use it during daily worship. I don't encourage the use of it, and tell them that if God forbid they or their babes are drug tested, they may have their babies removed from their custody.