but, you still desire God, right? you still feel remorse when you sin, right?
you're just really sick, and Satan is messing with you big time.
Addictions are very very strong. I don't believe addictions can separate us from the love of God, because I don't believe anything can separate a child from the love of God. It's His firm grip on us, not our feeble grip on Him. Imagine a father and his small child running from danger. That father is going to hold onto that child with all his strength and run with all his might. He's not going to trust the weak child to hold onto him. And that's how it is with God, He's holding onto us, regardless of what we are doing, and He's not going to let go. And I'm not saying that for everyone, but for those that are His.
But what makes you His isn't that you are able to overcome all addictions, and live a perfect life. We know that would be attaining our own righteousness for God's approval.

I can't tell you if you are a child of God or not. But I can tell you only a child of God desires to be with God, desires to please Him (even if he finds himself rebelling against God and unable to stop. You don't want to sin, right? You don't really want to give into those addictions, right? You have a flesh, filled with indwelling sin, and your body is sick and crying out for junk food. That is not uncommon at all even for christians. God knows how powerful things are over us. He doesn't turn away in anger when things overpower us. I don't know why He doesn't just take all the pain and temptations away all the time, or give us the strength to rise above it all, but He just doesn't. And maybe the lesson more than anything is for us to realize we are weak, because isn't that the lie we hear all the time, that we are so strong, and can do anything. Me and you were just discussing that recently in another post. But weakness is not the enemy, regardless of how much it feels like it is, cause it sure feels like the enemy, right? But remember these important words from Paul:

2 Corinthians 2:12
a thorn was given me in the flesh, a messenger of Satan to harass me, to keep me from becoming conceited. 8Three times I pleaded with the Lord about this, that it should leave me. 9But he said to me, “My grace is sufficient for you, for my power is made perfect in weakness.” Therefore I will boast all the more gladly of my weaknesses, so that the power of Christ may rest upon me. 10For the sake of Christ, then, I am content with weaknesses, insults, hardships, persecutions, and calamities. For when I am weak, then I am strong.


Maybe you have a thorn in your flesh too, and Satan is harassing you. That's who is mocking you, right? That's who is telling you that you can't possibly be a child of God.
Paul said he was going to boast in his weakness, in his hardships, persecutions, and calamities. That's sure not easy to do. We hate weakness as humans. We want to be powerful, we want to be soaring, not crawling in defeat.
But in our weakness, Christ's power rests on us, that's what Paul said. And when we are weak, and Christ's power is resting on us, then we are strong, even if it doesn't feel like that. It's what it says, we need to believe it, and cast feelings aside.

And all that said, I still hope and pray you overcome these addictions, and get your health back. But I know it will take God's power for you to do that, not your own. So wait on Him, but don't think that if you don't succeed, that he is rejecting you. Paul begged for his thorn to be removed, and God said no. God wasn't rejecting Paul in the least because of that thorn, but teaching him something else.
And I'm not saying give into those addictions by any means. Pray with all your might, and fight them. But if and when you fail, stop thinking God has rejected you. You are falling into Satan's trap when you start believing God has rejected you.