I would have no problem w/ it if my wife/gf smoked while pregnant, or even while breastfeeding perhaps. I would have to think about it more, in any case it's her choice.

But think about this: when my younger sister was born with spina bifida, my dad felt guilty for a long time about the possibility that his previous LSD use could have had something to do with her birth defect. It must be a terrible feeling, cause you can never be sure WHAT caused it... just think how you would be feeling as a mother for example, who gives birth to one of those rare cases, AFTER THE FACT. Cause then there's no going back.

Personally, I feel my dad was being paranoid and that the 'LSD birth defect' phenomenon has no evidence behind it, just pure bullshit propaganda. I don't judge anyone who smokes while pregnant (it must be one of the most interesting times in life to be high!!) because I don't believe it causes any harm. However I also respect those of you who would choose to go cold turkey on everything just to avoid that slight chance of having to second-guess yourself later.

There's no real answer I guess: 'Better safe than sorry' really is a healthy policy, but so is choosing not to live your life in fear and paranoia.