This is some next level abuse, comparable to drinking pesticides to "fix" illness!
Dying from dehydration is quite painful. And there is big chance person will not finish it. They "give up" on giving up (pun intended) and break water fast after a few days. On top of old illness, they may get damaged liver, preexisting kidney stones will manifest, hypoglycemic reaction, all sorts of nasty allergies... Amazing way to make a few remaining months even less pleasant!
Dying from dehydration is quite painful. And there is big chance person will not finish it. They "give up" on giving up (pun intended) and break water fast after a few days. On top of old illness, they may get damaged liver, preexisting kidney stones will manifest, hypoglycemic reaction, all sorts of nasty allergies... Amazing way to make a few remaining months even less pleasant!