As part of my bioethics course I have been tasked with leading a class debate on the rights of children with Fetal Alcohol Syndrome (FAS). During the discussion we realized that due to the prevelance of alcohol in (at least by our conclusions) western society, especially the middle ages, surely more of the population should be affected by ancestors of this disease.

My question is, when did it become common knowledge OR cultural taboo to abstain from alcohol during pregnancy? (Western society or otherwise)