It's a nasty way to go, and it's very slow. There's plenty of time for an intervention, so it's especially risky as far as that goes.
The hunger will go away, but that'll be replaced with full body pain that just gets worse and worse. Your organs will ultimately fail, you'll be jaundiced, your hair will fall out, your joints will swell, your muscles will disappear, you won't be able to maintain body temperature... And if you go long enough and then change your mind, eating again might even kill you.
The final stages are full of psychosis and convulsions.