Living without Food or Water!

I thought I've heard it all.  Thought in all my research in this quest to understand what is truly out there, that I have heard, or read or even seen it all.  But this, this really shocked me.  How can a person live for over 60 years without food, or water?  It seems so impossible, that I have a hard time accepting it.  Because of the integral part food and water plays in our health, well-being and just life itself, it seem to far out there to believe.  But, then again...