User blog comment:Jon825lazery7/Ichigo's Mom a Quincy/@comment-10579249-20130721202140

Honestly, it makes sense to see them as a race seeing as not everyone "born" in the soul society has a high spiritual pressure. It's the genetic equivalent of a mutant. I'd go with whatever Kubo says... Which i believe is Profession. And Quincies aren't human, they are Quincy. Thus when Yhwach did that one thing that stripped the "impure" Quincy of their power, he took whatever Quincy were that had human blood. Ichigo's mom died because while she WAS pure Quincy, she was now part Hollow.