If they are mentally competent fully aware of the end result of a prolonged hunger strike, let them starve themselves. Even to death if that is their desire.
Two Wikipedia links. Both saying how nasal and esophageal forced feedings are painful, and torture.
Link 1
Link 2
I'll check further. Thanks.
And, yeah, the human dignity angle is a no brainer.
eta: More checking. WTF are MPs doing inserting ng tubes or being involved in the process at all? It's a medical procedure. No wonder it sometimes causes problems.
Moving on, I've come to think of torture as something done to either 1)get information otherwise not gettable (though we all know it's often bad information that's gotten), or 2)cause pain for the fun of it. I don't think the intent of tube feeding fits either category. The intent is clearly to keep the prisoner alive. But the whole human dignity thing--yeah. If this isn't torture, it borders on it.
Two Wikipedia links. Both saying how nasal and esophageal forced feedings are painful, and torture.
Link 1
Link 2