Yax
Ancient Mariner
He's a tech millionare dedicating his life and his money to live as long as he possibly can. He doesn't work anymore, he just does this. He's an excentric, to say the least.Sure, this guy, a "real expert", who doesn't even look young for his age, just like a normal guy of his age who works out a lot.
However, competent medical advice really makes a big difference, that's just the way it is.