User blog comment:Cococrash11/Hollows breeds with humans/@comment-1454424-20100501122859

The answer is still now. Arrancar too, do not "live". They are just hollows who have regained some semblance of a mind. Arrancar do not age (Lilynette informs us of this), cannot die of starvation - i.e. do not need to eat, even if they do eat (Yammy) and drink tea. They too do not "live" as humans and shinigami do. Arrancar remain essentially hollows. They cannot have children with each other, let alone with anyone else.