My 12yr old son is constantly going in the fridge/food cupboards helping himself to whatever he fancies. Usually sugary stuff and over the top. Often food I've got plans for. He comes down in the night when I'm sleeping. I've repeatedly told him he's not to help himself. He takes no notice. He's a bit overweight. I don't like him not asking...and I'm a control freak when it comes to my kitchen...and also his diet. He's overweight, has ADHD, and seems to have an eating disorder...quite obsessive. It's driving me nuts. And he keeps on doing it...takes absolutely no notice. Any advice, suggestions would be appreciated.