Fantastic Voyage: Live long enough to live forever

I just bought this book - basically it is about keeping your health in check and staying alive (adjusting for your biochemistry, using supplements, diets, etc) until the biotechnology revolution in a couple of decades time, when you can extend your lifespan even more. Then hopefully you can make it to era of medical nanotechnology - and from then on live forever. It is written by Ray Kurzweil, author of Singularity is Near and The Age of Spiritual Machines. Looks like an excellent book, I can't wait to read it.