I wonder if it's actually possible to commit suicide by swallowing placebos? Or is there some limit to the nocebo effect's severity that'd prevent that?
It's certainly interesting to think about. Unfortunately I'd assume the answer is no. Like a previous commenter said, the mind controls the body. I'm reminded of cases where one person passes away in an elderly couple and the other then passes a few short years/months after. My grandmother was never the same after my grandfather died. She seemed relatively youthful before he died, but afterward she aged rapidly, and died 2 years later.
Sorry, meant to say "Unfortunately I'd assume the answer is no", as in I doubt there would be a limit to the nocebo effect.