Quoting loser mom:" Does anyone else in his family have the same issues? I know deafness can be heredity. I would say in your SO's case, those were all probably causes from chronic drug and alcohol use. "
you don't know that. two women can both drink and use lots of drugs during their pregnancies, one has a totally healthy baby, the other a really sick one.
every single one of those conditions might be genetic, or it might not.
OP, we take a chance regardless. I'd talk to the genetic counselor if I were you, sure, but there are no guarantees
some of the healthiest people have sleeper genetic defects they pass on to their children