I think there’s a difference on the local and global level here. From my point of view, if we ignore some doctor’s recommendation for pregnancy or child rearing, there’s a minuscule chance of an adverse effect. From the health experts point of view, a minuscule chance multiplied by billions of people is thousands or even millions of unnecessary birth defects or deaths.

A pregnant woman can rationally and morally choose to have a drink every once in a while —- there’s almost no chance there will be a problem, while at the same time, it’s a rational and moral for doctors to recommend not drinking at all — millions of lives are at stake potentially.