Combating an eating addiction would be really hard for two reasons. First and foremost, you are addicted to an act that you require to stay alive. You're going to have to keep doing it, which means it's never going to be gone from your life, and you're going to have to face it every day. There's no analogy to explain that. No other addiction has that problem.
The second reason that makes it hard is that the desire for the endorphin rush you get from eating too much yummy food feels exactly like hunger to you. You can't tell that you're not really hungry, just itching for a fix. To start with, you just need to eat a very specific, portion-controlled diet and scream through the withdrawals where your body is telling you that you're still hungry - starving, even - and you'd better get more food before it gets deadly. That would be the hardest part of all.
Mokalus of Borg
PS - I'm fairly sure I've never been addicted to eating.
PPS - Unless I still am, and don't realise it.