Amazing film, perfectly acted and accurate depiction of addiction, not just to food but addiction in general, I think you need to have fought and won against any addiction to understand how believable this is, addressing fear, selfishness, sorrow, loathing, guilt and irrational thinking.
People who don't like this because it doesn't show Christianity in a good light shouldn't be reviewing it as this is about the real world and people, not your personal beliefs, not everyone believes the same as you.
This was an excellent film for people with open minds and are unblinkered.