Some movies are truer than we think.
Indiana Jones and the Last Crusade when the bad guy drinks from what he thinks is the Holy Grail? Donovan hired the beautiful archeologist to help him find the Grail, thinking that it would give eternal life to anyone who drank from it.
Yeah, it doesn't end well for the guy.
It seems if one chooses "poorly," it drains your life instead of restoring it. Donovan goes from Nazi tool to dust in the wind rather quickly.