This is a weird one for me.
My son had leukemia (AML), and would have died without aggresive chemo. An anti-biotic made him deaf (he has Cochlear Implants now). At the time, the experimental regimen (that saved his life) called for 5 rounds of chemo. The 4th almost killed him, so we passed. He’s now healthy physically, but still has side effects.
No easy answer on this one, but I totally shun religious bullspit on this. Keep your kid alive or don’t. This is science vs. voodoo.