User blog comment:Kaido King of the Beasts/Chapter 880: Wave Making Cake Baking/@comment-75.133.94.200-20171001150541/@comment-71.13.82.131-20171002145258

Based upon what has been shown thus far it would appear that the 6 months taken from the people of BM's queendom are used to make the normal homies. Since she has to get from them every 6 months it would imply that that homies would "die" if they did not receive a new soul. So from that implication the special homies would require the same thing from the only perons powerful enough for them, BM. So if she is giving up her soul to keep her special homies going then she would be down a lot of lifespan as well, unless what she "eats" from people goes into her own lifespan.