healthy diet plan for my brother

I pity my brother. I mean, what he did to him is definitely his fault, however, I think that my parents could have taken more care of him as well. I, as his brother, could have probably done more as well, but I have never really felt obliged to do it as he never really asked me for help. The thing is, my brother is a bit fat. It is all because of those computers. Fortunately I never really went with the flow of computers. I always fancied doing sports and I still do. My brother, on the other hand, is a complete opposite of me. He spends all days in front of a computer screen and he eats junk food. This guy could really use a healthy diet plan and a helping hand in general. I could easily help him but he never wants any help. If he only asked I would probably do my best in order to help him. However now, although I pity him in one way another, I do not feel the need to help him because he is too addicted to the computer. He has to understand himself that computer games are of a naught importance. I sometimes ask him whether he wants to go out and play football with me. His answer is always the same: I am playing. If he only implemented a healthy diet plan it would be a success but he does not care about his health at all.