Anyone ever read the Stephen King story called 'Survivor Type'? If not, I highly recommend it. But I'll summarize it a bit.

This doctor guy is smuggling heroin on a boat and the boat sinks. He escapes to a tiny little island, more like a couple of rocks, with his bag of surgical instruments, and the heroin. But one of his legs is broken.

Well, he tries to catch some seagulls for food, by throwing rocks at them, but isn't successful, and he's starving. And his leg is looking pretty bad. And he doesn't want to risk gangrene, so, since he's a doctor, and he has the tools, he removes his leg. And eats it.

Time passes, and the first leg is gone, and he's getting hungry again. Like REALLY hungry. Sooo...off with the other leg, and more heroin to kill the pain. Then his ears, then one arm. Months have passed, and he's just a one-armed stump of a man, but *finally* in the distance he sees a boat and flags them down, and is rescued.

That dude seriously wanted to live!