I'm sure that is why no breatharians come forward.
There was that guy called Nature Boy or something, I think he was Robert Crumb's comic book character. Anyway he lived alone in the mountains and some guy tried to video interveiw him and he was very opposed to it. I don't know how old he was, quite old I'm sure.
Also, people think Jasmuheen is a fraud because she won't be medically tested...it's pretty obvious why she declines.