Possibly. There is growing body of evidence it might be.
Please confirm: can I counteract the effects of marijuana on the developing fetus with Cocaine? My drug friends tell me they act like opposites in the body. Thanks
You're wrong to assume so on the basis of this study. It might be true, but this study doesn't show that.
Smoking anything during pregnancy is bad for the baby.
You really shouldn't sort things into "good" and "bad" bins. The world is more complicated than that.