A rights-based culture finds these issues almost impossible. Can we really violate a person's sovereign sphere and force them to eat against their own free will!?
It made me think of John Stuart Mill's account of freedom in On Liberty:
In the part [of the conduct of an individual] which merely concerns himself, his independence is, of course, of right, absolute. Over himself, over his own body and mind, the individual is sovereign.
How on earth could Mill ever get a girl to eat? In fact his words sound exactly like the motto of a pro-ana website!
And people wonder why anorexia is such a western phenomenon!