According to the U.S. Department of Health and Human Services:
"We do not know what, if any, amount of alcohol is safe. But we do know that the risk of a baby being born with any of the fetal alcohol spectrum disorders increases with the amount of alcohol a pregnant woman drinks, as does the likely severity of the condition. And when a pregnant woman drinks alcohol, so does her baby.
And, in regards to smoking, HHS cautioned:
Smoking during pregnancy can lead to a low birthweight baby and can reduce your baby's lung function
Did your mom or grandmother have a vice while expecting?
Photo courtesy of AMC