There really is a disease that produces too much blood. Polycythemia vera.
But the symptoms sucks. Bleeding for no reason, like noese bleeds and bleeding gums. Itchiness. Upper abdominal pain from enlarged spleen.
Part of the treatment is blood draws, similar to blood donation.
I read one manhwa involving farming humans for vampires. It would have been interesting if that manhwa, or another vampire farm one altered human genes, or breeded for specifically that gene to make blood easier to farm.
There really is a disease that produces too much blood. Polycythemia vera.
But the symptoms sucks. Bleeding for no reason, like noese bleeds and bleeding gums. Itchiness. Upper abdominal pain from enlarged spleen.
Part of the treatment is blood draws, similar to blood donation.
I read one manhwa involving farming humans for vampires. It would have been interesting if that manhwa, or another vampire farm one altered human genes, or breeded for specifically that gene to make blood easier to farm.