You don't it see it, you can't hear it or smell it, but fetal exposure to alcohol (even after birth) DOES cause brain damage! AKA Fetal Alcohol Syndrome (FAS) ...... or one of its many forms (Fetal Alcohol Effects (FAE), Alcohol Related Neoroligical Disorders (ARND) ~ ~ ~ the severity of any of these can be mild to severe.
Just becasue you do nto see a disability, or it is not severe 100% of the time does not mean it does not exist .....................