> It avoids the graft-versus-host issues of using stem cells from another person Not sure that's the issues here. I think the major risk comes with completely

> It avoids the graft-versus-host issues of using stem cells from another person Not sure that's the issues here. I think the major risk comes with completely wiping the original immune system, before implanting the new seed cells. Apart from the implications in any means of killing "half the body", people are existentially defenseless against any pathogen around them, for a few weeks. I think this procedure will never be reasonably safe, for anyone who isn't rolling their last die.