You can kill someone from over hydration.
Water intoxication
https://en.wikipedia.org/wiki/Water_intoxication
Are you a medical professional that you can dispense medical advice like this?
Or are you just a run of the mill idiot offering snake oil salesmen cures that you know nothing about.
My bet is on the latter.
OH here we go.
You calling my mother a witch doctor? Because that is exactly what she would do when we got a bad illness.
Got anything better, oh Greta one? Yes thats right, you are Greta.