Can humans evolve to drink blood?

In A Canticle for Leibowitz, the Plains Nomads conserve water for their animals by men drinking animal blood and women and children drinking milk instead. However, since ingesting any decently sized amount of blood can be toxic for normal humans, would it be possible for the Nomad men to have evolved the ability to process blood?

is a duplicate

This question has been asked before and has already been answered. It should be marked as a duplicate.

Please enter the URL of the proposed duplicate in the details field below.

not constructive

This question cannot be answered in a way that is helpful to anyone. It's not possible to learn something from possible answers, except for the solution for the specific problem of the asker.

Communities

Can humans evolve to drink blood?

0 comment threads

0 answers