How to save a life

Cheesy title I know, just move past it already.

My dad had blood work done to day to test his eligibility for a kidney transplant. He's going to go to surgery to get a fistula so he can start hemodialysis. I hate seeing him like this. When I first realized he was going to need a kidney, all I wanted to do was give him mine. But I'm at high risk to develop the same health issues he has. Even if I were eligible to donate, it would be at a tremendous risk to myself, not necessarily right away, but in the future. Still, I desperately want to help him. He has a couple of siblings who are in good health, but I don't know if they'd be willing to donate a kidney to him. Even my brother wants to give up a kidney, but he's got the same risk factors that I have. He's still young, and my dad's siblings have families to think of. So in my mind, that makes it my obligation to donate. As I wrote before, I've had to lock away the last of my dreams. My parents and my brother are my world, my future. More than ever I feel the need to make some changes. If I can alter my lifestyle, get rid of some bad habits, I can greatly reduce my risk of inheriting my dad's health problems. It is now more important than ever that I get healthy. It's not just about trying to look good. It's about saving someone's life. I need to get my self into the best shape possible in order to do the same for my dad.