I find even the idea of drinking piss or eating shit hightly revolving, but I guess that everyone has to decide on that out of their own.

as a student of life sciences I can only contribute one thing to this topic: nature wanted to use urine as a means to get rid of the body's toxic waste - if you have any problems with your kidneys you'll have a major crisis, so there is a reason why this stuff should get out and be deposed of as far as it concerns us humans. faeces is the rest of everything the body can't use, so it's either useless or also toxic; this knowledge, although rather rudimentarely put here is enough for me to answer the question of this topic with NO